Data from FDA - Curated by EPG Health - Last updated 30 December 2017

Indication(s)

INDICATIONS AND USAGE Tri-Previfem® (norgestimate and ethinyl estradiol tablets USP) is indicated for the prevention of pregnancy in women who elect to use oral contraceptives as a method of contraception. Tri-Previfem® is indicated for the treatment of moderate acne vulgaris in females at least 15 years of age, who have no known contraindications to oral contraceptive therapy and have achieved menarche. Tri-Previfem® should be used for the treatment of acne only if the patient desires an oral contraceptive for birth control. Oral contraceptives are highly effective for pregnancy prevention. Table II lists the typical accidental pregnancy rates for users of combination oral contraceptives and other methods of contraception. The efficacy of these contraceptive methods, except sterilization, the IUD, and the Norplant System, depends upon the reliability with which they are used. Correct and consistent use of methods can result in lower failure rates. Table II: Percentage of Women Experiencing an Unintended Pregnancy During the First Year of Typical Use and the First Year of Perfect Use of Contraception and the Percentage Continuing Use at the End of the First Year. United States. % of Women Experiencing an Unintended Pregnancy within the First Year of Use % of Women Continuing Use at One Year3 Method (1) Typical Use1 (2) Perfect Use2 (3) (4) Chance4 85 85 Spermicides5 26 6 40 Periodic abstinence 25 63 Calendar 9 Ovulation Method 3 Sympto-Thermal6 2 Post-Ovulation 1 Cap7 Parous Women 40 26 42 Nulliparous Women 20 9 56 Sponge Parous Women 40 20 42 Nulliparous Women 20 9 56 Diaphragm7 20 6 56 Withdrawal 19 4 Condom8 Female (Reality)® 21 5 56 Male 14 3 61 Pill 5 71 Progestin Only 0.5 Combined 0.1 IUD Progesterone T 2.0 1.5 81 Copper T380A 0.8 0.6 78 LNg 20 0.1 0.1 81 Depo-Provera® 0.3 0.3 70 Norplant and Norplant-2 0.05 0.05 88 Female Sterilization 0.5 0.5 100 Male Sterilization 0.15 0.10 100 Hatcher et al, 1998, Ref. #1. Emergency Contraceptive Pills: Treatment initiated within 72 hours after unprotected intercourse reduces the risk of pregnancy by at least 75%.9 Lactational Amenorrhea Method: LAM is a highly effective, temporary method of contraception.10 Source: Trussell J, Contraceptive efficacy. In Hatcher RA, Trussell J, Stewart F, Cates W, Stewart GK, Kowal D, Guest F, Contraceptive Technology: Seventeenth Revised Edition. New York NY: Irvington Publishers, 1998. 1 Among typical couples who initiate use of a method (not necessarily for the first time), the percentage who experience an accidental pregnancy during the first year if they do not stop use for any other reason. 2 Among couples who initiate use of a method (not necessarily for the first time) and who use it perfectly (both consistently and correctly), the percentage who experience an accidental pregnancy during the first year if they do not stop use for any other reason. 3 Among couples attempting to avoid pregnancy, the percentage who continue to use a method for one year. 4 The percents becoming pregnant in columns (2) and (3) are based on data from populations where contraception is not used and from women who cease using contraception in order to become pregnant. Among such populations, about 89% become pregnant within one year. This estimate was lowered slightly (to 85%) to represent the percent who would become pregnant within one year among women now relying on reversible methods of contraception if they abandoned contraception altogether. 5 Foams, creams, gels, vaginal suppositories, and vaginal film. 6 Cervical mucus (ovulation) method supplemented by calendar in the pre-ovulatory and basal body temperature in the post-ovulatory phases. 7 With spermicidal cream or jelly. 8 Without spermicides. 9 The treatment schedule is one dose within 72 hours after unprotected intercourse, and a second dose 12 hours after the first dose. The Food and Drug Administration has declared the following brands of oral contraceptives to be safe and effective for emergency contraception: Ovral® (1 dose is 2 white pills), Alesse® (1 dose is 5 pink pills), Nordette® or Levlen® (1 dose is 2 light-orange pills), Lo/Ovral® (1 dose is 4 white pills), Triphasil® or Tri-Levlen® (1 dose is 4 yellow pills). 10 However, to maintain effective protection against pregnancy, another method of contraception must be used as soon as menstruation resumes, the frequency or duration of breastfeeds is reduced, bottle feeds are introduced, or the baby reaches six months of age. Tri-Previfem® has not been studied for and is not indicated for use in emergency contraception. In four clinical trials with norgestimate and ethinyl estradiol, a total of 4,756 subjects completed 45,244 cycles, and the use-efficacy pregnancy rate was approximately 1 pregnancy per 100 women-years. Norgestimate and ethinyl estradiol was evaluated for the treatment of acne vulgaris in two randomized, double-blind, placebo-controlled, multicenter, Phase 3, six (28 day) cycle studies. 221 patients received norgestimate and ethinyl estradiol and 234 patients received placebo. Mean age at enrollment for both groups was 28 years. At the end of 6 months, the mean total lesion count changes from 55 to 31 (42% reduction) in patients treated with norgestimate and ethinyl estradiol and from 54 to 38 (27% reduction) in patients similarly treated with placebo. Table III summarizes the changes in lesion count for each type of lesion in the ITT population. Based on the investigator’s global assessment conducted at the final visit, patients treated with norgestimate and ethinyl estradiol showed a statistically significant improvement in total lesions compared to those treated with placebo. Table III: Acne Vulgaris Indication. Combined Results: Two Multicenter, Placebo-Controlled Trials. Observed Means at Six Months (LOCF) LOCF: Last Observation Carried Forward and at Baseline. Intent-to-Treat Population. Norgestimate and Ethinyl Estradiol (N = 221) Placebo (N = 234) Difference in Counts between Norgestimate and Ethinyl Estradiol and Placebo at 6 Months # of Lesions Counts % Reduction Counts % Reduction INFLAMMATORY LESIONS Baseline Mean 19 19 Sixth Month Mean 10 48% 13 30% 3 (95% CI: -1.2, 5.1) NON-INFLAMMATORY LESIONS Baseline Mean 36 35 Sixth Month Mean 22 34% 25 21% 3 (95% CI: -0.2, 7.8) TOTAL LESIONS Baseline Mean 55 54 Sixth Month Mean 31 42% 38 27% 7 (95% CI: 2.0, 11.9)

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Advisory information

contraindications
CONTRAINDICATIONS Oral contraceptives should not be used in women who currently have the following conditions: Thrombophlebitis or thromboembolic disorders A past history of deep vein thrombophlebitis or thromboembolic disorders Known thrombophilic conditions Cerebral vascular or coronary artery disease (current or past history) Valvular heart disease with complications Persistent blood pressure values of ≥ 160 mm Hg systolic or ≥ 100 mg Hg diastolic 102 Diabetes with vascular involvement Headaches with focal neurological symptoms Major surgery with prolonged immobilization Known or suspected carcinoma of the breast or personal history of breast cancer Carcinoma of the endometrium or other known or suspected estrogen-dependent neoplasia Undiagnosed abnormal genital bleeding Cholestatic jaundice of pregnancy or jaundice with prior pill use Acute or chronic hepatocellular disease with abnormal liver function Hepatic adenomas or carcinomas Known or suspected pregnancy Hypersensitivity to any component of this product
Special warnings and precautions
PRECAUTIONS 1. General Patients should be counseled that this product does not protect against HIV infection (AIDS) and other sexually transmitted diseases. 2. Physical Examination and Follow Up It is good medical practice for all women to have annual history and physical examinations, including women using oral contraceptives. The physical examination, however, may be deferred until after initiation of oral contraceptives if requested by the woman and judged appropriate by the clinician. The physical examination should include special reference to blood pressure, breasts, abdomen and pelvic organs, including cervical cytology, and relevant laboratory tests. In case of undiagnosed, persistent or recurrent abnormal vaginal bleeding, appropriate measures should be conducted to rule out malignancy. Women with a strong family history of breast cancer or who have breast nodules should be monitored with particular care. 3. Lipid Disorders Women who are being treated for hyperlipidemias should be followed closely if they elect to use oral contraceptives. Some progestogens may elevate LDL levels and may render the control of hyperlipidemias more difficult. 4. Liver Function If jaundice develops in any woman receiving such drugs, the medication should be discontinued. Steroid hormones may be poorly metabolized in patients with impaired liver function. 5. Fluid Retention Oral contraceptives may cause some degree of fluid retention. They should be prescribed with caution, and only with careful monitoring, in patients with conditions which might be aggravated by fluid retention. 6. Emotional Disorders Women with a history of depression should be carefully observed and the drug discontinued if depression recurs to a serious degree. 7. Contact Lenses Contact lens wearers who develop visual changes or changes in lens tolerance should be assessed by an ophthalmologist. 8. Drug Interactions Consult the labeling of concurrently-used drugs to obtain further information about interactions with hormonal contraceptives or the potential for enzyme alterations. Effects of Other Drugs on Combined Hormonal Contraceptives Substances decreasing the plasma concentrations of COCs and potentially diminishing the efficacy of COCs: Drugs or herbal products that induce certain enzymes, including cytochrome P450 3A4 (CYP3A4), may decrease the plasma concentrations of COCs and potentially diminish the effectiveness of CHCs 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, rifabutin, rufinamide, aprepitant, and products containing St. John's wort. Interactions between hormonal 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 CHCs, 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 or rosuvastatin and certain COCs containing EE increase AUC values for EE by approximately 20-25%. Ascorbic acid and acetaminophen may increase plasma EE concentrations, possibly by inhibition of conjugation. CYP3A4 inhibitors such as itraconazole, voriconazole, fluconazole, grapefruit juice, or ketoconazole may increase plasma hormone concentrations. Human immunodeficiency virus (HIV)/ Hepatitis C virus (HCV) protease inhibitors and non-nucleoside reverse transcriptase inhibitors: Significant changes (increase or decrease) in the plasma concentrations of estrogen and/or progestin have been noted in some cases of co-administration with HIV protease inhibitors (decrease [e.g., nelfinavir, ritonavir, darunavir/ritonavir, (fos)amprenavir/ritonavir, lopinavir/ritonavir, and tipranavir/ritonavir] or increase [e.g., indinavir and atazanavir/ritonavir]) /HCV protease inhibitors (decrease [e.g., boceprevir and telaprevir]) or with non-nucleoside reverse transcriptase inhibitors (decrease [e.g.,nevirapine] or increase [e.g., etravirine]). Colesevelam: Colesevelam, a bile acid sequestrant, given together with a combination oral hormonal contraceptive, has been shown to significantly decrease the AUC of EE. A drug interaction between the contraceptive and colesevelam was decreased when the two drug products were given 4 hours apart. Effects of Combined Hormonal Contraceptives on Other Drugs COCs containing EE may inhibit the metabolism of other compounds (e.g., cyclosporine, prednisolone, theophylline, tizanidine, and voriconazole) and increase their plasma concentrations. COCs have been shown to decrease plasma concentrations of acetaminophen, clofibric acid, morphine, salicylic acid, temazepam and lamotrigine. Significant decrease in plasma concentration of lamotrigine has been shown, 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 concentrations of thyroid-binding globulin increases with use of COCs. 9. Interactions With Laboratory Tests Certain endocrine and liver function tests and blood components may be affected by oral contraceptives: Increased prothrombin and factors VII, VIII, IX, and X; decreased antithrombin 3; increased norepinephrine-induced platelet aggregability. Increased thyroid binding globulin (TBG) leading to increased circulating total thyroid hormone, as measured by protein-bound iodine (PBI), T4 by column or by radioimmunoassay. Free T3 resin uptake is decreased, reflecting the elevated TBG, free T4 concentration is unaltered. Other binding proteins may be elevated in serum. Sex hormone binding globulins are increased and result in elevated levels of total circulating sex steroids; however, free or biologically active levels either decrease or remain unchanged. Triglycerides may be increased and levels of various other lipids and lipoproteins may be affected. Glucose tolerance may be decreased. Serum folate levels may be depressed by oral contraceptive therapy. This may be of clinical significance if a woman becomes pregnant shortly after discontinuing oral contraceptives. 10. Carcinogenesis See WARNINGS . 11. Pregnancy Teratogenic Effects Pregnancy Category X See CONTRAINDICATIONS and WARNINGS . 12. Nursing Mothers Small amounts of oral contraceptive steroids have been identified in the milk of nursing mothers and a few adverse effects on the child have been reported, including jaundice and breast enlargement. In addition, combination oral contraceptives given in the postpartum period may interfere with lactation by decreasing the quantity and quality of breast milk. If possible, the nursing mother should be advised not to use combination oral contraceptives but to use other forms of contraception until she has completely weaned her child. 13. Pediatric Use Safety and efficacy of norgestimate and ethinyl estradiol tablets have been established in women of reproductive age. Safety and efficacy are expected to be the same for postpubertal adolescents under the age of 16 and for users 16 years and older. There was no significant difference between norgestimate and ethinyl estradiol tablets and placebo in mean change in total lumbar spine (L1-L4) and total hip bone mineral density between baseline and Cycle 13 in 123 adolescent females with anorexia nervosa in a double-blind, placebo-controlled, multicenter, one-year treatment duration clinical trial for the Intent To Treat (ITT) population. Use of this product before menarche is not indicated. 14. Geriatric Use This product has not been studied in women over 65 years of age and is not indicated in this population.
Adverse reactions
ADVERSE REACTIONS An increased risk of the following serious adverse reactions has been associated with the use of oral contraceptives (see WARNINGS ). Thrombophlebitis and venous thrombosis with or without embolism Arterial thromboembolism Pulmonary embolism Myocardial infarction Cerebral hemorrhage Cerebral thrombosis Hypertension Gallbladder disease Hepatic adenomas or benign liver tumors There is evidence of an association between the following conditions and the use of oral contraceptives: Mesenteric thrombosis Retinal thrombosis The following adverse reactions have been reported in patients receiving oral contraceptives and are believed to be drug-related: Nausea Vomiting Gastrointestinal symptoms (such as abdominal cramps and bloating) Breakthrough bleeding Spotting Change in menstrual flow Amenorrhea Temporary infertility after discontinuation of treatment Edema Melasma which may persist Breast changes: tenderness, enlargement, secretion Change in weight (increase or decrease) Change in cervical erosion and secretion Diminution in lactation when given immediately postpartum Cholestatic jaundice Migraine Allergic reaction, including rash, urticaria, angioedema Mental depression Reduced tolerance to carbohydrates Vaginal candidiasis Change in corneal curvature (steepening) Intolerance to contact lenses The following adverse reactions have been reported in users of oral contraceptives and a causal association has been neither confirmed nor refuted: Pre-menstrual syndrome Cataracts Changes in appetite Cystitis-like syndrome Headache Nervousness Dizziness Hirsutism Loss of scalp hair Erythema multiforme Erythema nodosum Hemorrhagic eruption Vaginitis Porphyria Impaired renal function Hemolytic uremic syndrome Acne Changes in libido Colitis Budd-Chiari syndrome The following adverse reactions were also reported in clinical trials or during postmarketing experience: Infections and Infestations: vaginal infection, urinary tract infection; Psychiatric Disorders: mood altered, anxiety, insomnia; Gastrointestinal Disorders: flatulence, pancreatitis, diarrhea, constipation; Reproductive System and Breast Disorders: dysmenorrhea; ovarian cyst, vulvovaginal dryness; Neoplasms Benign, Malignant and Unspecified (Including Cysts and Polyps): benign breast neoplasm, fibroadenoma of breast, breast cyst; Nervous System Disorders: syncope, convulsion, paraesthesia; Eye Disorders: visual impairment, dry eye; Ear and Labyrinth Disorders: vertigo; Cardiac Disorders: tachycardia, palpitations; Vascular Disorders: hot flush; Respiratory, Thoracic and Mediastinal Disorders: dyspnoea; Hepatobiliary Disorders: hepatitis; Skin and Subcutaneous Tissue Disorders: night sweats, hyperhidrosis, photosensitivity reaction, pruritus; Musculoskeletal, Connective Tissue, and Bone Disorders: muscle spasms, pain in extremity, myalgia, back pain; General Disorders and Administration Site Conditions: chest pain, asthenic conditions.

Usage information

Dosing and administration
DOSAGE AND ADMINISTRATION Oral Contraception To achieve maximum contraceptive effectiveness, Tri-Previfem® must be taken exactly as directed and at intervals not exceeding 24 hours. The possibility of ovulation and conception prior to initiation of medication should be considered. Tri-Previfem® is available in the blister pack tablet dispenser which is preset for a Sunday Start. Day 1 Start is also provided. Sunday Start When taking Tri-Previfem® the first tablet should be taken on the first Sunday after menstruation begins. If the period begins on Sunday, the first tablet should be taken that day. Take one active tablet daily for 21 days followed by one light-green inactive tablet daily for 7 days. After 28 tablets have been taken, a new course is started the next day (Sunday). For the first cycle of a Sunday Start regimen, another method of contraception should be used until after the first 7 consecutive days of administration. If the patient misses one (1) active tablet in Weeks 1, 2, or 3, the tablet should be taken as soon as she remembers. If the patient misses two (2) active tablets in Week 1 or Week 2, the patient should take two (2) tablets the day she remembers and two (2) tablets the next day; and then continue taking one (1) tablet a day until she finishes the pack. The patient should be instructed to use a back-up method of birth control such as a condom or spermicide if she has sex in the seven (7) days after missing pills. If the patient misses two (2) active tablets in the third week or misses three (3) or more active tablets in a row, the patient should continue taking one tablet every day until Sunday. On Sunday the patient should throw out the rest of the pack and start a new pack that same day. The patient should be instructed to use a back-up method of birth control if she has sex in the seven (7) days after missing pills. Complete instructions to facilitate patient counseling on proper pill usage may be found in the DETAILED PATIENT LABELING (“HOW TO TAKE THE PILL”). Day 1 Start The dosage of Tri-Previfem®, for the initial cycle of therapy, is one active tablet administered daily from the 1st day through the 21st day of the menstrual cycle, counting the first day of menstrual flow as “Day 1” followed by one light-green inactive tablet daily for 7 days. Tablets are taken without interruption for 28 days. After 28 tablets have been taken, a new course is started the next day. If the patient misses one (1) active tablet in Weeks 1, 2, or 3, the tablet should be taken as soon as she remembers. If the patient misses two (2) active tablets in Week 1 or Week 2, the patient should take two (2) tablets the day she remembers and two (2) tablets the next day; and then continue taking one (1) tablet a day until she finishes the pack. The patient should be instructed to use a back-up method of birth control such as a condom or spermicide if she has sex in the seven (7) days after missing pills. If the patient misses two (2) active tablets in the third week or misses three (3) or more active tablets in a row, the patient should throw out the rest of the pack and start a new pack that same day. The patient should be instructed to use a back-up method of birth control if she has sex in the seven (7) days after missing pills. Complete instructions to facilitate patient counseling on proper pill usage may be found in the DETAILED PATIENT LABELING (“HOW TO TAKE THE PILL”). The use of Tri-Previfem® for contraception may be initiated 4 weeks postpartum in women who elect not to breast feed. When the tablets are administered during the postpartum period, the increased risk of thromboembolic disease associated with the postpartum period must be considered (see CONTRAINDICATIONS and WARNINGS concerning thromboembolic disease; see also PRECAUTIONS , Nursing Mothers ). The possibility of ovulation and conception prior to initiation of medication should be considered. (See Discussion of Dose-Related Risk of Vascular Disease From Oral Contraceptives .) ADDITIONAL INSTRUCTIONS Breakthrough bleeding, spotting, and amenorrhea are frequent reasons for patients discontinuing oral contraceptives. In breakthrough bleeding, as in all cases of irregular bleeding from the vagina, nonfunctional causes should be borne in mind. In undiagnosed persistent or recurrent abnormal bleeding from the vagina, adequate diagnostic measures are indicated to rule out pregnancy or malignancy. If pathology has been excluded, time or a change to another formulation may solve the problem. Changing to an oral contraceptive with a higher estrogen content, while potentially useful in minimizing menstrual irregularity, should be done only if necessary since this may increase the risk of thromboembolic disease. Use of oral contraceptives in the event of a missed menstrual period: If the patient has not adhered to the prescribed schedule, the possibility of pregnancy should be considered at the time of the first missed period and oral contraceptive use should be discontinued if pregnancy is confirmed. If the patient has adhered to the prescribed regimen and misses two consecutive periods, pregnancy should be ruled out. ACNE The timing of initiation of dosing with norgestimate and ethinyl estradiol for acne should follow the guidelines for use of Tri-Previfem® as an oral contraceptive. Consult the DOSAGE AND ADMINISTRATION section for oral contraceptives . The dosage regimen for Tri-Previfem® for treatment of facial acne, as available in a blister pack tablet dispenser, utilizes a 21 day active and a 7-day placebo schedule. Take one active tablet daily for 21 days followed by one light-green inactive tablet for 7 days. After 28 tablets have been taken, a new course is started the next day.
Pregnancy and lactation
12. Nursing Mothers Small amounts of oral contraceptive steroids have been identified in the milk of nursing mothers and a few adverse effects on the child have been reported, including jaundice and breast enlargement. In addition, combination oral contraceptives given in the postpartum period may interfere with lactation by decreasing the quantity and quality of breast milk. If possible, the nursing mother should be advised not to use combination oral contraceptives but to use other forms of contraception until she has completely weaned her child.

Interactions

Drug-Drug Interactions No formal drug-drug interaction studies were conducted with Tri-Previfem®. Interactions between contraceptive steroids and other drugs have been reported in the literature (see PRECAUTIONS ). Although norelgestromin and its metabolites inhibit a variety of P450 enzymes in human liver microsomes, under the recommended dosing regimen, the in vivo concentrations of norelgestromin and its metabolites, even at the peak serum levels, are relatively low compared to the inhibitory constant (Ki).

More information

Category Value
Authorisation number ANDA076335
Orphan designation No
Product NDC 0603-7663
Date Last Revised 22-11-2013
Type HUMAN PRESCRIPTION DRUG
RXCUI 748797
Storage and handling Keep out of reach of children. Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. Protect from light.
Marketing authorisation holder Par Pharmaceutical
Warnings WARNINGS: CARDIOVASCULAR RISK ASSOCIATED WITH SMOKING Cigarette smoking increases the risk of serious cardiovascular events from combination oral contraceptive use. This risk increases with age, particularly in women over 35 years of age, and with the number of cigarettes smoked. For this reason, combination oral contraceptives, including Tri­ Previfem® (norgestimate and ethinyl estradiol tablets USP), should not be used by women who are over 35 years of age and smoke.