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CLINICAL PHARMACOLOGY Mechanism Of Action COCs lower the risk of becoming pregnant primarily by suppressing ovulation. Other possible mechanisms may include cervical mucus changes that inhibit sperm penetration and endometrial changes that reduce the likelihood of implantation. Pharmacodynamics No pharmacodynamic studies were conducted with Quartette. Pharmacokinetics Absorption Ethinyl estradiol and levonorgestrel are absorbed with maximum plasma concentrations occurring within 2 hours after Quartette administration. Levonorgestrel is completely absorbed after oral administration (bioavailability nearly 100%) and is not subject to first-pass metabolism. Ethinyl estradiol is absorbed from the gastrointestinal tract but, due to first-pass metabolism in gut mucosa and liver, the bioavailability of ethinyl estradiol is approximately 40%. The effect of food on the rate and the extent of levonorgestrel and ethinyl estradiol absorption following oral administration of Quartette has not been evaluated. The mean plasma pharmacokinetic parameters of levonorgestrel following administration of another levonorgestrel/ethinyl estradiol combination tablet with an equal dose of levonorgestrel for 84 days, in healthy women are reported in Table 2. Table 2: Mean Pharmacokinetic Parameters for 150 mcg Levonorgestrel Following Administration of a Levonorgestrel/ethinyl estradiol Combination Tablet Once Daily for 84 Days AUC0-24 hr (mean ± SD) Cmax (mean ± SD) Tmax (mean ± SD) Day 1 18.2 ± 6.1 ng•hr/mL 3.0 ± 1.0 ng/mL 1.3 ± 0.4 hours Day 21 64.4 ± 25.1 ng•hr/mL 6.2 ± 1.6 ng/mL 1.3 ± 0.4 hours Day 84 60.2 ± 24.6 ng•hr/mL 5.5 ± 1.6 ng/mL 1.3± 0.3 hours Following repeated daily dosing of levonorgestrel/ethinyl estradiol oral contraceptives, levonorgestrel plasma concentrations accumulate more than predicted based on single-dose pharmacokinetics, due in part, to increased SHBG levels that are induced by ethinyl estradiol, and a possible reduction in hepatic metabolic capacity. Systemic exposure to ethinyl estradiol following administration of a LNG/EE combination tablet increases linearly in an approximate dose-proportional manner over the range of doses of 20 mcg to 30 mcg within this product. Systemic exposure to EE (as assessed by AUC) at steady state following administration of levonorgestrel/ethinyl estradiol oral contraceptives is approximately 20% higher than expected based on single-dose data for the dose range of 20-30 mcg. Distribution The apparent volume of distribution of levonorgestrel is reported to be approximately 1.8 L/kg. Levonorgestrel is about 97.5 -99% protein-bound, principally to sex hormone binding globulin (SHBG) and, to a lesser extent, serum albumin. The apparent volume of distribution of ethinyl estradiol is reported to be approximately 4.3 L/kg. Ethinyl estradiol is about 95-97% bound to serum albumin. Ethinyl estradiol does not bind to SHBG, but induces SHBG synthesis, which leads to decreased levonorgestrel clearance. Metabolism Following absorption, levonorgestrel is conjugated at the 17β-OH position to form sulfate and to a lesser extent, glucuronide conjugates in plasma. Significant amounts of conjugated and unconjugated 3α,5β-tetrahydrolevonorgestrel are also present in plasma, along with much smaller amounts of 3α,5α-tetrahydrolevonorgestrel and 16β-hydroxylevonorgestrel. Levonorgestrel and its phase I metabolites are excreted primarily as glucuronide conjugates. Metabolic clearance rates may differ among individuals by several-fold, and this may account in part for the wide variation observed in levonorgestrel concentrations among users. First-pass metabolism of ethinyl estradiol involves formation of ethinyl estradiol-3-sulfate in the gut wall, followed by 2-hydroxylation of a portion of the remaining untransformed ethinyl estradiol by hepatic cytochrome P-450 3A4 (CYP3A4). Levels of CYP3A4 vary widely among individuals and can explain the variation in rates of ethinyl estradiol hydroxylation. Hydroxylation at the 4-, 6-, and 16-positions may also occur, although to a much lesser extent than 2-hydroxylation. The various hydroxylated metabolites are subject to further methylation and/or conjugation. Excretion About 45% of levonorgestrel and its metabolites are excreted in the urine and about 32% are excreted in feces, mostly as glucuronide conjugates. The mean terminal elimination half-life for levonorgestrel after a single dose of Quartette ranged from 36-41 hours. Ethinyl estradiol is excreted in the urine and feces as glucuronide and sulfate conjugates, and it undergoes enterohepatic recirculation. The terminal elimination half-life of ethinyl estradiol following single doses of Quartette is approximately 16.5 hours. Clinical Studies In a 12-month, multicenter, open-label, single-arm clinical trial conducted in the US, 3,667 women, 18-40 years old, were enrolled and 3,565 were treated for up to four 91-day cycles, which equates to thirteen 28-day cycles, to assess the safety and efficacy of Quartette, completing the equivalent of 33,895 28-day cycles of exposure. The racial demographic of those treated was: Caucasian (64%), African-American (19%), Hispanic (11%), Asian (2%), and Other (3%). There were no exclusions for body mass index (BMI) or weight. The weight range of those women treated was 83 to 402 lbs., with a mean weight of 162.5 lbs. Among the women in the trial, 44% were current hormonal contraceptive users, 39% were prior users (who had used hormonal contraceptives in the past), and 17% were new starters. Of treated women, 13.2% were lost to follow-up, 12.8% discontinued due to an adverse event, and 6.1% discontinued by withdrawing their consent. The pregnancy rate (Pearl Index [PI]) in women aged 18-35 years was 3.19 pregnancies per 100 woman-years of use (95% confidence interval 2.49, 4.03), based on 70 pregnancies that occurred after the onset of treatment and up to and including 7 days after the last pill. Cycles in which conception did not occur, but which included the use of backup contraception, were not included in the calculation of the PI. The PI includes patients who did not take the drug correctly.

QUARTETTE® (levonorgestrel/ethinyl estradiol and ethinyl estradiol) Tablets, for Oral Use WARNING CIGARETTE SMOKING AND SERIOUS CARDIOVASCULAR EVENTS Cigarette smoking increases the risk of serious cardiovascular events from combination oral contraceptives (COC) use. This risk increases with age, particularly in women over 35 years of age, and with the number of cigarettes smoked. For this reason, COCs should not be used by women who are over 35 years of age and smoke. [See CONTRAINDICATIONS] DESCRIPTION Quartette (levonorgestrel/ethinyl estradiol and ethinyl estradiol) tablets is an extended-cycle oral contraceptive. Quartette consists of 42 light pink tablets containing 0.15 mg levonorgestrel and 0.02 mg ethinyl estradiol, 21 pink tablets containing 0.15 mg levonorgestrel and 0.025 mg ethinyl estradiol, and 21 purple tablets containing 0.15 mg levonorgestrel and 0.03 mg ethinyl estradiol, and 7 yellow tablets containing 0.01 mg ethinyl estradiol. Levonorgestrel is a progestin and ethinyl estradiol is an estrogen. The structural formulas, molecular formulas, molecular weights, and chemical names for the active components are shown below: Levonorgestrel C21H28O2 MW: 312.4 Levonorgestrel is chemically 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-(17α)-()-. Ethinyl Estradiol C20H24O2 MW: 296.4 Ethinyl Estradiol is 19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol, (17α)-. Each Light Pink Tablet Contains The Following Inactive Ingredients anhydrous lactose, D&C Red no. 27/phloxine aluminum lake, FD&C Blue no. 2/Indigo Carmine aluminum lake, FD&C Yellow no. 6/Sunset Yellow FCF aluminum lake, hypromellose, lactose monohydrate, microcrystalline cellulose, magnesium stearate, polyethylene glycol/macrogol, titanium dioxide, and triacetin. Each Pink Tablet Contains The Following Inactive Ingredients anhydrous lactose, D&C Red no. 27/phloxine aluminum lake, FD&C Blue no. 2/Indigo Carmine aluminum lake, hypromellose, lactose monohydrate, microcrystalline cellulose, magnesium stearate, polyethylene glycol/macrogol, titanium dioxide and triacetin. Each Purple Tablet Contains The Following Inactive Ingredients anhydrous lactose, D&C Red no. 27/phloxine aluminum lake, FD&C Blue no. 1/Brilliant blue FCF aluminum lake, hypromellose, lactose monohydrate, microcrystalline cellulose, magnesium stearate, polyethylene glycol/macrogol, titanium dioxide and triacetin. Each Yellow Tablet Contains The Following Inactive Ingredients anhydrous lactose, D&C yellow no. 10 aluminum lake, FD&C Yellow no. 6/Sunset Yellow FCF aluminum lake, hypromellose, magnesium stearate, microcrystalline cellulose, polacrilin potassium, polyethylene glycol/macrogol, polysorbate 80 and titanium dioxide.

INDICATIONS Quartette® is indicated for use by females of reproductive age to prevent pregnancy. DOSAGE AND ADMINISTRATION How To Take Quartette Instruct patients to take Quartette once a day by mouth at the same time every day for 91 days. To achieve maximum contraceptive effectiveness, Quartette must be taken exactly as directed and at intervals not exceeding 24 hours. For patient instructions regarding missed pills, see FDA-approved patient labeling. How To Start Quartette For each 91-day course, take in the following order: Start the first light pink tablet (0.15 mg of levonorgestrel and 0.02 mg ethinyl estradiol) on the first Sunday after the onset of menstruation. If menstruation begins on a Sunday, take the tablet on that day. Then take one light pink tablet once a day for a total of 42 consecutive days. Use a non-hormonal back-up method of contraception (such as condoms and spermicide) for the first 7 days of treatment. One pink tablet (0.15 mg of levonorgestrel and 0.025 mg ethinyl estradiol) once a day for 21 consecutive days. One purple tablet (0.15 mg of levonorgestrel and 0.03 mg ethinyl estradiol) once a day for 21 days. One yellow tablet (0.01 mg of ethinyl estradiol) once a day for 7 days. Bleeding should occur during yellow tablet use. Begin the next and all subsequent 91-day courses of Quartette without interruption on the same day of the week (i.e., Sunday) on which the patient began her first dose. Follow the same schedule as the initial 91-day course: light pink tablet once a day for 42 days, pink tablet once a day for 21 days, purple tablet once a day for 21 days, and yellow tablet once a day for 7 days. If the patient does not immediately start her next pill pack, instruct her to protect herself from pregnancy by using a non-hormonal back-up method of contraception until she has taken a light pink tablet daily for 7 consecutive days. If unscheduled spotting or bleeding occurs, instruct the patient to continue on the same regimen. If the bleeding is persistent or prolonged, advise the patient to consult her healthcare provider. For a postpartum woman who is not breastfeeding or after a second trimester abortion, start Quartette no earlier than four weeks postpartum due to increased risk of thromboembolism. If the patient starts on Quartette postpartum and has not yet had a period, evaluate for possible pregnancy, and instruct her to use an additional method of contraception until she has taken a light pink tablet for 7 consecutive days. Consider the possibility of ovulation and conception prior to initiation. Advice In Case Of Gastrointestinal Disturbances In case of severe vomiting or diarrhea, absorption may not be complete and additional contraceptive measures should be taken. If vomiting or diarrhea occurs within 3-4 hours after taking a light pink, pink or purple tablet, handle this as a missed tablet [see FDA-approved patient labeling]. HOW SUPPLIED Dosage Forms And Strengths Quartette (levonorgestrel/ethinyl estradiol and ethinyl estradiol) tablets are available as round, film-coated, biconvex tablets debossed with TV on one side, packaged in Extended-Cycle Tablet Dispensers, each containing a 13-week supply of tablets in the following order: 42 light pink tablets, each containing 0.15 mg of levonorgestrel and 0.02 mg ethinyl estradiol: debossed with 076 on the other side 21 pink tablets containing 0.15 mg of levonorgestrel and 0.025 mg ethinyl estradiol: debossed with 075 on the other side 21 purple tablets containing 0.15 mg of levonorgestrel and 0.03 mg ethinyl estradiol: debossed with 074 on the other side and 7 yellow tablets containing 0.01 mg of ethinyl estradiol: debossed with 077 on the other side Storge And Handling Quartette (levonorgestrel/ethinyl estradiol and ethinyl estradiol) tablets are available as round, film-coated, unscored, biconvex tablets debossed with TV on one side, packaged in an Extended-Cycle Tablet Dispenser, each containing a 13-week supply of the tablets in the following order: 42 light pink tablets, each containing 0.15 mg of levonorgestrel and 0.02 mg ethinyl estradiol: debossed with 076 on the other side 21 pink tablets containing 0.15 mg of levonorgestrel and 0.025 mg ethinyl estradiol: debossed with 075 on the other side 21 purple tablets containing 0.15 mg of levonorgestrel and 0.03 mg ethinyl estradiol: debossed with 074 on the other side and 7 yellow tablets containing 0.01 mg of ethinyl estradiol: debossed with 077 on the other side Box of 2 Extended-Cycle Tablet Dispensers NDC 51285-431-87 Storage Conditions Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. Manufactured by: TEVA WOMEN’S HEALTH, INC. Subsidiary of TEVA PHARMACEUTICALS USA, INC. North Wales, PA 19454. Revised: Aug 2017

PATIENT INFORMATION Quartette (levonorgestrel/ethinyl estradiol and ethinyl estradiol) Tablets, for Oral Use WARNING TO WOMEN WHO SMOKE Do not use Quartette if you smoke cigarettes and are over 35 years old. Smoking increases your risk of serious cardiovascular side effects from birth control pills, including death from heart attack, blood clots or stroke. This risk increases with age and the number of cigarettes you smoke. Birth control pills help to lower the chances of becoming pregnant. They do not protect against HIV infection (AIDS) and other sexually transmitted infections. What Is Quartette? Quartette is a birth control pill. It contains two female hormones, an estrogen called ethinyl estradiol, and a progestin called levonorgestrel. How Well Does Quartette Work? Your chance of getting pregnant depends on how well you follow the directions for taking your birth control pills. The more carefully you follow the directions, the less chance you have of getting pregnant. Based on the results of a single clinical study lasting 12 months, 2 to 4 women out of 100 women may get pregnant during the first year they use Quartette. The following chart shows the chance of getting pregnant for women who use different methods of birth control. Each box on the chart contains a list of birth control methods that are similar in effectiveness. The most effective methods are at the top of the chart. The box on the bottom of the chart shows the chance of getting pregnant for women who do not use birth control and are trying to get pregnant. How Do I Take Quartette? Take one pill every day at the same time. Take pills in the order directed on the Extended-Cycle Tablet Dispenser. Do not skip pills or delay taking your pills. If you miss pills (including starting the pack late), you could get pregnant. The more pills you miss, the more likely you are to get pregnant. You may have spotting or light bleeding, or feel sick to your stomach during the first few months of taking Quartette. If you feel sick to your stomach, do not stop taking the pill. The problem will usually go away. If it doesn't go away, check with your healthcare provider. If you vomit or have diarrhea within 4 hours after taking your pill, follow the instructions in “What To Do If You Miss Pills.” Missing pills can also cause spotting or light bleeding, even when you take the missed pills later. On the days you take 2 pills to make up for missed pills, you could also feel a little sick to your stomach. If you have trouble remembering to take Quartette, talk to your healthcare provider about how to make pill-taking easier or about using another method of birth control. Before you start taking Quartette Decide what time of day you want to take your pill. It is important to take it at about the same time every day. Look at your Extended-Cycle Tablet Dispenser. Your Extended-Cycle Tablet Dispenser consists of 3 trays with cards that hold 91 individually sealed pills (a 13week or 91-day cycle). The 91 pills consist of 42 light pink tablets, each containing 0.15 mg of levonorgestrel and 0.02 mg ethinyl estradiol, 21 pink tablets containing 0.15 mg of levonorgestrel and 0.025 mg ethinyl estradiol, 21 purple tablets containing 0.15 mg of levonorgestrel and 0.03 mg ethinyl estradiol, and 7 yellow tablets containing 0.01 mg of ethinyl estradiol. Tray 1 contains 4 rows of 7 light pink pills. Tray 2 contains 2 rows of 7 light pink pills (a total of 14 light pink pills) followed by 2 rows of 7 pink pills (a total of 14 pink pills). Tray 3 contains 1 row of 7 pink pills, followed by three rows of 7 purple pills (a total of 21 purple pills), followed by the last row, which contains 7 yellow pills. Also find: Where on the first tray in the pack to start taking pills (upper left corner at the start arrow) and In what order to take the pills (follow the weeks and arrow). Be sure you have another kind of birth control (such as condoms and spermicides) ready at all times, to use as a back-up in case you miss pills. When to Start Quartette Take the first light pink pill on the Sunday after your period starts, even if you are still bleeding. If your period begins on Sunday, start the first light pink pill that same day. Use another method of birth control (such as condoms and spermicides) as a backup method if you have sex anytime from the Sunday you start your first light pink pill until the next Sunday (first 7 days). If you have been using a different hormonal method of birth control (such as a different pill, the “patch,” or the “vaginal ring”), you need to use another method of birth control (such as condoms and spermicides) each time you have sex after stopping your old method of birth control until you have taken Quartette for 7 days. If you have recently given birth and have not yet had a period, use another method of birth control if you have sex (such as condoms and spermicides) as a back-up method until you have taken Quartette for 7 days. How to Take Quartette Take one pill at the same time every day until you have taken the last pill in the Extended-Cycle Tablet Dispenser. Do not skip pills even if you are experiencing spotting or bleeding or feel sick to your stomach (nausea). Do not skip pills even if you do not have sex very often. Do not skip the yellow pills because they are not placebo pills (“sugar pills”). They contain ethinyl estradiol. When you finish a tablet dispenser After taking the last yellow pill, start taking the first light pink pill from a new Extended-Cycle Tablet Dispenser the very next day (this should be on a Sunday) regardless of when your period started. If you miss your scheduled period when you are taking the yellow pills, contact your healthcare provider because you may be pregnant. If you are pregnant, you should stop taking Quartette. What To Do If You Miss Pills If you MISS 1 light pink, pink or purple pill: Take it as soon as you remember. Take the next pill at your regular time. This means you may take 2 pills in 1 day. You do not need to use a back-up birth control method if you have sex. If you MISS 2 light pink, pink or purple pills in a row: Take 2 pills on the day you remember, and 2 pills the next day. Then take 1 pill a day until you finish the pack. You could become pregnant if you have sex in the 7 days after you miss two pills. You MUST use another birth control method (such as condoms and spermicide) as a back-up for the 7 days after you restart your pills. If you MISS 3 OR MORE light pink, pink or purple pills in a row: Do not take the missed pills. Keep taking 1 pill every day as indicated on the pack until you have completed all of the remaining pills in the pack. For example: If you resume taking the pill on Thursday, take the pill under “Thursday” and do not take the missed pills. You may experience bleeding during the week following the missed pills. You could become pregnant if you have sex during the days of missed pills or during the first 7 days after restarting your pills. You MUST use a non-hormonal birth control method (such as condoms and spermicide) as a back-up when you miss pills and for the first 7 days after you restart your pills. If you do not have your period when you are taking the yellow pills, call your healthcare provider because you may be pregnant. If you MISS ANY of the 7 yellow pills: Take the next scheduled pill at the scheduled time. You do not need a back-up method of birth control. Finally, if you are still not sure what to do about the pills you have missed Use a back-up method anytime you have sex. Keep taking one pill each day until you contact your healthcare provider. Who Should Not Take Quartette? Your healthcare provider will not give you Quartette if you have: Ever had breast cancer or any cancer that is sensitive to female hormones Liver disease, including liver tumors Been prescribed any Hepatitis C drug combination containing ombitasvir/paritaprevir/ritonavir, with or without dasabuvir. This may increase levels of the liver enzyme “alanine aminotransferase” (ALT) in the blood Ever had blood clots in your arms, legs, eyes, or lungs Ever had a stroke Ever had a heart attack Certain heart valve problems or heart rhythm abnormalities that can cause blood clots to form in the heart An inherited problem with your blood that makes it clot more than normal High blood pressure that medicine can't control Diabetes with kidney, eye, nerve or blood vessel damage Ever had certain kinds of severe migraine headaches with aura, numbness, weakness or changes in vision, or have any migraine headaches if you are over age 35 Also, do not take birth control pills if you: Smoke and are over 35 years old Are pregnant Have any unexplained bleeding from the vagina Birth control pills may not be a good choice for you if you have ever had jaundice (yellowing of the skin or eyes) caused by pregnancy. Tell your healthcare provider if you have ever had any of the above conditions (your healthcare provider may recommend another method of birth control). What Else Should I Know About Taking Quartette? Birth control pills do not protect you against any sexually transmitted infection, including HIV, the virus that causes AIDS. Do not skip any pills, even if you do not have sex often. Birth control pills should not be taken during pregnancy. However, birth control pills taken by accident during pregnancy are not known to cause birth defects. You should stop Quartette at least four weeks before you have major surgery and not restart it for at least two weeks after the surgery, due to an increased risk of blood clots. If you are breastfeeding, consider another birth control method until you are ready to stop breastfeeding. Birth control pills that contain estrogen, like Quartette, may decrease the amount of milk you make. A small amount of the pill's hormones pass into breast milk. Tell your healthcare provider about all medicines and herbal products that you take. Some medicines and herbal products may make birth control pills less effective, including: barbiturates bosentan carbamazepine felbamate griseofulvin oxcarbazepine phenytoin rifampin St. John’s wort topiramate Use a back-up or alternative birth control method when you take medicines that may make birth control pills less effective. If you have vomiting or diarrhea, your birth control pills may not work as well. Use another birth control method, like condoms and spermicide, until you check with your healthcare provider. Birth control pills may interact with lamotrigine, an anticonvulsant used for epilepsy. This may increase the risk of seizures, so your healthcare provider may need to adjust the dose of lamotrigine. Women on thyroid hormone replacement therapy may need increased doses of thyroid hormone. What Are The Most Serious Risks Of Taking Birth Control Pills? Like pregnancy, birth control pills increase the risk of serious blood clots, especially in women who have other risk factors, such as smoking, obesity, or age greater than 35. This increased risk is highest when you first start taking birth control pills and when you restart the same or different birth control pills after not using them for a month or more. It is possible to die from a problem caused by a blood clot, such as a heart attack or a stroke. Some examples of serious blood clots are blood clots in the: Legs (deep vein thrombosis) Lungs (pulmonary embolus) Eyes (loss of eyesight) Heart (heart attack) Brain (stroke) Women who take birth control pills may get: High blood pressure Gallbladder problems Rare cancerous or noncancerous liver tumors All of these events are uncommon in healthy women. Call your healthcare provider right away if you have: Persistent leg pain Sudden shortness of breath Sudden blindness, partial or complete Severe pain or pressure in your chest Sudden, severe headache unlike your usual headaches Weakness or numbness in an arm or leg, or trouble speaking Yellowing of the skin or eyeballs What Are Common Side Effects Of Birth Control Pills? The most common side effects of birth control pills are: Spotting or bleeding between menstrual periods Nausea Breast tenderness Headache These side effects are usually mild and usually disappear with time. Less common side effects are: Acne Less sexual desire Bloating or fluid retention Blotchy darkening of the skin, especially on the face High blood sugar, especially in women who already have diabetes High fat (cholesterol, triglyceride) levels in the blood Depression, especially if you have had depression in the past. Call your healthcare provider immediately if you have any thoughts of harming yourself. Problems tolerating contact lenses Weight gain This is not a complete list of possible side effects. Talk to your healthcare provider if you develop any side effects that concern you. You may report side effects to the FDA at 1-800FDA-1088. No serious problems have been reported from a birth control pill overdose, even when accidentally taken by children. Do Birth Control Pills Cause Cancer? Birth control pills do not appear to cause breast cancer. However, if you have breast cancer now, or have had it in the past, do not use birth control pills because some breast cancers are sensitive to hormones. Women who use birth control pills may have a slightly higher chance of getting cervical cancer. However, this may be due to other reasons such as having more sexual partners. What Should I Know About My Period When Taking Quartette? When you take Quartette, which has a 91-day extended dosing cycle, you should expect to have 4 scheduled periods per year (bleeding when you are taking the 7 yellow pills). Each period is likely to last about 3-4 days. However, you will probably have more bleeding or spotting between your scheduled periods than if you were using a birth control pill with a 28-day dosing cycle. This bleeding or spotting tends to decrease with each additional cycle. Do not stop taking Quartette because of this bleeding or spotting. If the spotting continues for more than 7 consecutive days or if the bleeding is heavy, call your healthcare provider. What If I Miss My Scheduled Period When Taking Quartette? You should consider the possibility that you are pregnant if you miss your scheduled period (no bleeding on the days that you are taking yellow pills). Because scheduled periods are less frequent when you are taking Quartette, notify your healthcare provider that you have missed your period and that you are taking Quartette. Also notify your healthcare provider if you have symptoms of pregnancy such as morning sickness or unusual breast tenderness. It is important that your healthcare provider evaluates you to determine if you are pregnant. Stop taking Quartette if it is determined that you are pregnant. What If I Want To Become Pregnant? You may stop taking the pill whenever you wish. Consider a visit with your healthcare provider for a pre-pregnancy checkup before you stop taking the pill. General Advice About Quartette Your healthcare provider prescribed Quartette for you. Do not share Quartette with anyone else. Keep Quartette out of the reach of children. If you have concerns or questions, ask your healthcare provider. You may also ask your healthcare provider for a more detailed label written for medical professionals.

SIDE EFFECTS The following serious adverse reactions with the use of COCs are discussed elsewhere in the labeling: Serious cardiovascular events and stroke [see WARNINGS AND PRECAUTIONS] Vascular events [see WARNINGS AND PRECAUTIONS] Liver disease [see WARNINGS AND PRECAUTIONS] Adverse reactions commonly reported by COC users are: Irregular uterine bleeding Nausea Breast tenderness Headache Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to the rates in the clinical trials of another drug and may not reflect the rates observed in practice. The safety data described below are from a 12-month, US, open-label study, which enrolled women aged 18-40, of whom 3,597 took at least one dose of Quartette (2,661 woman-years of exposure) [see Clinical Studies]. Adverse Reactions Leading To Study Discontinuation 13.3% of the women discontinued from the clinical trial due to an adverse reaction; the most common adverse reactions (≥1% of women) leading to discontinuation were heavy/irregular bleeding (5.0%), mood swings/alteration/affect lability (1.4%), headaches/migraines (1.3%), weight increased (1.3%) and acne (1.0%). Common Adverse Reactions (≥2% Of Women) headaches (12.2%), heavy/irregular vaginal bleeding (9.7%), nausea/vomiting (8.8%), acne (5.4%), dysmenorrhea (5.4%), weight increased (4.6%), mood changes (depression, depressed mood, crying, major depression, affective disorder, depression suicidal, dysthymic disorder) (2.9%), anxiety/panic attack (2.4%), breast tenderness/pain/discomfort (2.2%), migraine (2.0%). Serious Adverse Reactions (≥2 Women) Abortion Spontaneous, Suicide Attempt, Cholecystitis/ Cholelithiasis, Deep Vein Thrombosis, Ectopic Pregnancy. Postmarketing Experience The following adverse reactions have been identified during post-approval use of other extended-cycle COCs containing levonorgestrel and ethinyl estradiol. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Gastrointestinal disorders: abdominal distension, vomiting General disorders and administration site conditions: chest pain, fatigue, malaise, edema peripheral, pain Immune system disorders: hypersensitivity reaction Investigations: blood pressure increased Musculoskeletal and connective tissue disorders: muscle spasms, pain in extremity Nervous system disorders: dizziness, loss of consciousness Psychiatric disorders: insomnia Reproductive and breast disorders: dysmenorrhea Respiratory, thoracic and mediastinal disorders: pulmonary embolism, pulmonary thrombosis Skin and subcutaneous tissue disorders: alopecia Vascular disorders: thrombosis DRUG INTERACTIONS Consult the labeling of concurrently-used drugs to obtain further information about interactions with hormonal contraceptives or the potential for enzyme alterations. No drug-drug interaction studies were conducted with Quartette. Effects Of Other Drugs On Combined Oral Contraceptives Substances Diminishing The Efficacy Of COCs Drugs or herbal products that induce certain enzymes, including cytochrome P450 3A4 (CYP3A4), may decrease the effectiveness of COCs or increase breakthrough bleeding. Some drugs or herbal products that may decrease the effectiveness of hormonal contraceptives include phenytoin, barbiturates, carbamazepine, bosentan, felbamate, griseofulvin, oxcarbazepine, rifampicin, topiramate and products containing St. John’s wort. Interactions between oral contraceptives and other drugs may lead to breakthrough bleeding and/or contraceptive failure. Counsel women to use an alternative method of contraception or a back-up method when enzyme inducers are used with COCs, and to continue back-up contraception for 28 days after discontinuing the enzyme inducer to ensure contraceptive reliability. Substances Increasing The Plasma Concentrations Of COCs Co-administration of atorvastatin and certain COCs containing EE increase AUC values for EE by approximately 20%. Ascorbic acid and acetaminophen may increase plasma EE concentrations, possibly by inhibition of conjugation. CYP3A4 inhibitors such as itraconazole or ketoconazole may increase plasma hormone concentrations. Human Immunodeficiency Virus (HIV)/ Hepatitis C Virus (HCV) Protease Inhibitors And Nonnucleoside Reverse Transcriptase Inhibitors Significant changes (increase or decrease) in the plasma concentrations of estrogen and progestin have been noted in some cases of co-administration with HIV/HCV protease inhibitors or with non-nucleoside reverse transcriptase inhibitors. Antibiotics There have been reports of pregnancy while taking hormonal contraceptives and antibiotics, but clinical pharmacokinetic studies have not shown consistent effects of antibiotics on plasma concentrations of synthetic steroids. Effects Of Combined Oral Contraceptives On Other Drugs COCs containing EE may inhibit the metabolism of other compounds. COCs have been shown to significantly decrease plasma concentrations of lamotrigine, likely due to induction of lamotrigine glucuronidation. This may reduce seizure control; therefore, dosage adjustments of lamotrigine may be necessary. Women on thyroid hormone replacement therapy may need increased doses of thyroid hormone because serum concentration of thyroid-binding globulin increases with use of COCs. Concomitant Use With Hepatitis C Vaccine (HCV) Combination Therapy – Liver Enzyme Elevation Do not co-administer Quartette with HCV drug combinations containing ombitasvir/paritaprevir/ritonavir, with or without dasabuvir, due to potential for ALT elevations [see WARNINGS AND PRECAUTIONS]. Interference With Laboratory Tests The use of contraceptive steroids may influence the results of certain laboratory tests, such as coagulation factors, lipids, glucose tolerance, and binding proteins.

WARNINGS Included as part of the "PRECAUTIONS" Section PRECAUTIONS Thromboembolic Disorders And Other Vascular Problems Stop Quartette if an arterial or deep venous thrombotic event (VTE) occurs. Stop Quartette if there is unexplained loss of vision, proptosis, diplopia, papilledema, or retinal vascular lesions. Evaluate for retinal vein thrombosis immediately. If feasible, stop Quartette at least 4 weeks before and through 2 weeks after major surgery or other surgeries known to have an elevated risk of VTE. Start Quartette no earlier than 4 weeks after delivery, in women who are not breastfeeding. The risk of postpartum VTE decreases after the third postpartum week, whereas the risk of ovulation increases after the third postpartum week. The use of COCs increases the risk of VTE. However, pregnancy increases the risk of VTE as much or more than the use of COCs. The risk of VTE in women using COCs is 3 to 9 per 10,000 woman-years. The risk of VTE is highest during the first year of use of a COC. Data from a large, prospective cohort safety study of various COCs suggest that this increased risk, as compared to that in non-COC users, is greatest during the first 6 months of COC use. Data from this safety study indicate that the greatest risk of VTE is present after initially starting a COC or restarting (following a 4-week or greater pill-free interval) the same or a different COC. The risk of thromboembolic disease due to COCs gradually disappears after COC use is discontinued. Use of Quartette provides women with more hormonal exposure on a yearly basis than conventional monthly oral contraceptives containing the same strength synthetic estrogens and progestins (an additional 9 and 13 weeks of exposure to progestin and estrogen, respectively, per year). In the clinical trial, three cases of deep vein thrombosis were reported. Use of COCs also increases the risk of arterial thromboses such as strokes and myocardial infarctions, especially in women with other risk factors for these events. COCs have been shown to increase both the relative and attributable risks of cerebrovascular events (thrombotic and hemorrhagic strokes), although, in general, the risk is greatest among older (>35 years of age), and hypertensive women who also smoke. COCs also increase the risk for stroke in women with other underlying risk factors. Use COCs with caution in women with cardiovascular disease risk factors. Liver Disease Impaired Liver Function Do not use Quartette in women with acute viral hepatitis or severe (decompensated) cirrhosis of the liver [see CONTRAINDICATIONS]. Acute disturbances of liver function may necessitate the discontinuation of COC use until markers of liver function return to normal and COC causation has been excluded. Discontinue Quartette if jaundice develops. Liver Tumors Quartette is contraindicated in women with benign and malignant liver tumors [see CONTRAINDICATIONS]. Hepatic adenomas are associated with COC use. An estimate of the attributable risk is 3.3 cases/100,000 COC users. Rupture of hepatic adenomas may cause death through intra-abdominal hemorrhage. Studies have shown an increased risk of developing hepatocellular carcinoma in long-term (> 8 years) COC users. However, the attributable risk of liver cancers in COC users is less than one case per million users. High Blood Pressure Quartette is contraindicated in women with uncontrolled hypertension or hypertension with vascular disease [see CONTRAINDICATIONS]. For women with well-controlled hypertension, monitor blood pressure and stop Quartette if blood pressure rises significantly. An increase in blood pressure has been reported in women taking COCs, and this increase is more likely in older women and with extended duration of use. The incidence of hypertension increases with increasing concentration of progestin. Risk Of Liver Enzyme Elevations With Concomitant Hepatitis C Treatment During clinical trials with the Hepatitis C combination drug regimen that contains obmitasvir/paritaprevir/ritonavir, with or without dasabuvir, ALT elevations greater than 5 times the upper limit of normal (ULN), including some cases greater than 20 times the ULN, were significantly more frequent in women using ethinyl estradiol-containing medications, such as COCs. Discontinue Quartette prior to starting therapy with the combination drug regimen ombitasvir/paritaprevir/ritonavir, with or without dasabuvir [see CONTRAINDICATIONS]. Quartette can be restarted approximately 2 weeks following completion of treatment with the Hepatitis C combination drug regimen. Gallbladder Disease Studies suggest a small increased relative risk of developing gallbladder disease among COC users. Use of COCs may also worsen existing gallbladder disease. A past history of COC-related cholestasis predicts an increased risk with subsequent COC use. Women with a history of pregnancy-related cholestasis may be at an increased risk for COC-related cholestasis. Carbohydrate And Lipid Metabolic Effects Carefully monitor prediabetic and diabetic women who are taking Quartette. COCs may decrease glucose tolerance in a dose-related fashion. Consider alternative contraception for women with uncontrolled dyslipidemias. A small proportion of women will have adverse lipid changes while on COCs. Women with hypertriglyceridemia, or a family history thereof, may be at an increased risk of pancreatitis when using COCs. Headache If a woman taking Quartette develops new headaches that are recurrent, persistent, or severe, evaluate the cause and discontinue Quartette if indicated. Consider discontinuation of Quartette in the case of increased frequency or severity of migraine during COC use (which may be prodromal of a cerebrovascular event) [see CONTRAINDICATIONS]. Bleeding Irregularities Bleeding and/or spotting that occurs at any time while taking the first 84 tablets (light pink, pink and purple) of each extended-cycle regimen is considered “unscheduled” bleeding/spotting. Bleeding that occurs during the time a woman takes the seven tablets (yellow) containing 10 mcg of ethinyl estradiol is considered “scheduled” bleeding. Unscheduled And Scheduled Bleeding And Spotting Unscheduled (breakthrough) bleeding and spotting sometimes occur in patients on COCs, especially during the first 3 months of use. If unscheduled bleeding persists or occurs after previously regular cycles on Quartette, check for causes such as pregnancy or malignancy. If pathology and pregnancy are excluded, bleeding irregularities may resolve over time or with a change to a different COC. Before prescribing Quartette, consider the occurrence of fewer scheduled menses (4 per year instead of 13 per year) against the occurrence of increased unscheduled bleeding and/or spotting. A 12-month open-label study of the efficacy of Quartette in preventing pregnancy assessed scheduled and unscheduled bleeding [see Clinical Studies] in 3,597 women who completed 34,087 28-day cycles of exposure. A total of 178 (4.9%) of the women discontinued Quartette, at least in part, due to bleeding or spotting. Scheduled (withdrawal) bleeding and/or spotting remained fairly stable over time, with an average of 3 to 4 days of bleeding and/or spotting per each 91-day cycle. Unscheduled bleeding and unscheduled spotting decreased over successive 91-day cycles. Table 1 below presents the number of days with unscheduled bleeding, spotting, and unscheduled bleeding and/or spotting in Treatment Cycles 1 to 4. Table 1: Number of Unscheduled Bleeding, Spotting and Bleeding and/or Spotting Days per 91-day Cycle Cycle (N) Days of Unscheduled Bleeding per 84-Day Interval Median Days Per Subject-Month Mean Q1 Median Q3 1 (3330) 7.2 0 4 10 1.0 2 (2820) 3.3 0 0 4 0.0 3 (2433) 2.5 0 0 3 0.0 4 (2213) 2.2 0 0 2 0.0 Cycle (N) Days of Unscheduled Bleeding per 84-Day Interval Median Days Per Subject-Month Mean Q1 Median Q3 1 (3330) 10.7 2 7 15 1.8 2 (2820) 6.7 0 3 9 0.8 3 (2433) 5.2 0 2 6 0.5 4 (2213) 4.4 0 1 5 0.3 Cycle (N) Days of Unscheduled Bleeding per 84-Day Interval Median Days Per Subject-Month Mean Q1 Median Q3 1 (3330) 17.9 5 14 27 3.5 2 (2820) 10.0 1 5 14 1.3 3 (2433) 7.7 0 3 10 0.8 4 (2213) 6.6 0 3 8 0.8 Q1=Quartile 1: 25% of women had ≤ this number of days of unscheduled bleeding/spotting Median: 50% of women had ≤ this number of days of unscheduled bleeding/spotting Q3=Quartile 3: 75% of women had ≤ this number of days of unscheduled bleeding/spotting Figure 1 shows the percent of Quartette subjects in the primary clinical trial with ≥7 days or ≥20 days of unscheduled bleeding and/or spotting, or just unscheduled bleeding, during each 91-day treatment cycle. Figure 1: Percent of Women Taking Quartette Who Reported Unscheduled Bleeding and/or Spotting Amenorrhea and Oligomenorrhea Amenorrhea And Oligomenorrhea Women who are not pregnant and use Quartette may experience amenorrhea. Based on data from the clinical trial, amenorrhea occurred in approximately 1.9% of women during Cycle 1, 7.7% during Cycle 2, 10.7% during Cycle 3, and 10.1% during Cycle 4 using Quartette. Rule out pregnancy in the event of amenorrhea. Some women may experience amenorrhea or oligomenorrhea after stopping COCs, especially when such a condition was pre-existent. COC Use Before Or During Early Pregnancy Extensive epidemiological studies have revealed no increased risk of birth defects in women who have used oral contraceptives prior to pregnancy. Studies also do not suggest a teratogenic effect, particularly in so far as cardiac anomalies and limb-reduction defects are concerned, when taken inadvertently during early pregnancy. Discontinue Quartette if pregnancy is confirmed. The administration of oral contraceptives to induce withdrawal bleeding should not be used as a test for pregnancy [see Use In Specific Populations]. Depression Carefully observe women with a history of depression and discontinue Quartette if depression recurs to a serious degree. Six cases of suicidality (suicide attempts and suicidal behavior) were reported in the clinical trial; several of these cases occurred in women with a psychiatric history. Carcinoma Of The Breast And Cervix Quartette is contraindicated in women who currently have or have had breast cancer because breast cancer may be hormonally sensitive [see CONTRAINDICATIONS]. There is substantial evidence that COCs do not increase the incidence of breast cancer. Although some past studies have suggested that COCs might increase the incidence of breast cancer, more recent studies have not confirmed such findings. Some studies suggest that COCs are associated with an increase in the risk of cervical cancer or intraepithelial neoplasia. However, there is controversy about the extent to which these findings are due to differences in sexual behavior and other factors. Effect On Binding Globulins The estrogen component of COCs may raise the serum concentrations of thyroxine-binding globulin, sex hormone-binding globulin and cortisol-binding globulin. The dose of replacement thyroid hormone or cortisol therapy may need to be increased. Monitoring A woman who is taking COCs should have a yearly visit with her healthcare provider for a blood pressure check and for other indicated health care. Hereditary Angioedema In women with hereditary angioedema, exogenous estrogens may induce or exacerbate symptoms of angioedema. Chloasma Chloasma may occur with COC use, especially in women with a history of chloasma gravidarum. Advise women who tend to develop chloasma to avoid exposure to the sun or ultraviolet radiation while taking Quartette. Patient Counseling Information See FDA-approved patient labeling (PATIENT INFORMATION). Counsel patients on the following information: Cigarette smoking increases the risk of serious cardiovascular events from COC use, and that women who are over 35 years old and smoke should not use COCs. Increased risk of VTE compared to non-users of COCs is greatest after initially starting a COC or restarting (following a 4-week or greater pill-free interval) the same or a different COC. Quartette does not protect against HIV-infection (AIDS) and other sexually transmitted infections. The Warnings and Precautions associated with COCs. Quartette is not to be used during pregnancy; if pregnancy occurs during use of Quartette, instruct the patient to stop further intake. Take one tablet daily by mouth at the same time every day. Instruct patients what to do in the event pills are missed. See WHAT TO DO IF YOU MISS PILLS section of FDA-Approved Patient Labeling. Use a back-up or alternative method of contraception when enzyme inducers are used with COCs. COCs may reduce breast milk production. This is less likely to occur if breastfeeding is well established. Women who start COCs postpartum, and who have not yet had a period, should use an additional method of contraception until they have taken a light pink tablet for 7 consecutive days. Amenorrhea may occur. Consider pregnancy in the event of amenorrhea, and rule out pregnancy if amenorrhea is associated with symptoms of pregnancy, such as morning sickness or unusual breast tenderness. Nonclinical Toxicology Carcinogenesis, Mutagenesis, Impairment Of Fertility [See WARNINGS AND PRECAUTIONS and Use In Specific Populations]. Use In Specific Populations Pregnancy There is little or no increased risk of birth defects in women who inadvertently use COCs during early pregnancy. Epidemiologic studies and meta-analyses have not found an increased risk of genital or non-genital birth defects (including cardiac anomalies and limb-reduction defects) following exposure to low dose COCs prior to conception or during early pregnancy. The administration of COCs to induce withdrawal bleeding should not be used as a test for pregnancy. COCs should not be used during pregnancy to treat threatened or habitual abortion. Nursing Mothers When possible, advise the nursing mother to use other forms of contraception until she has weaned her child. COCs can reduce milk production in breastfeeding mothers. This is less likely to occur once breastfeeding is well established; however, it can occur at any time in some women. Small amounts of oral contraceptive steroids and/or metabolites are present in breast milk. Pediatric Use Safety and efficacy of Quartette have been established in women of reproductive age. Efficacy is expected to be the same for postpubertal adolescents under the age of 18 as for users 18 years and older. Use of Quartette before menarche is not indicated. Geriatric Use Quartette has not been studied in women who have reached menopause and is not indicated in this population. Hepatic Impairment No studies have been conducted to evaluate the effect of hepatic impairment on the disposition of Quartette. However, steroid hormones may be poorly metabolized in patients with hepatic impairment. Acute or chronic disturbances of liver function may necessitate the discontinuation of COC use until markers of liver function return to normal and COC causation has been excluded. [See CONTRAINDICATIONS and WARNINGS AND PRECAUTIONS] Renal Impairment No studies have been conducted to evaluate the effect of renal impairment on the disposition of Quartette.