Država: Sjedinjene Američke Države
Jezik: engleski
Izvor: NLM (National Library of Medicine)
LEVONORGESTREL (UNII: 5W7SIA7YZW) (LEVONORGESTREL - UNII:5W7SIA7YZW)
Watson Pharma, Inc.
LEVONORGESTREL
LEVONORGESTREL 0.05 mg
PRESCRIPTION DRUG
Abbreviated New Drug Application
TRIVORA- LEVONOGESTREL AND ETHINYL ESTRADIOL WATSON PHARMA, INC. ---------- REVISED: NOVEMBER 2007 IN-5427/S PHYSICIAN LABELING TRIVORA (LEVONORGESTREL AND ETHINYL ESTRADIOL TABLETS USP) TRIPHASIC REGIMEN RX ONLY PATIENTS SHOULD BE COUNSELED THAT THIS PRODUCT DOES NOT PROTECT AGAINST HIV INFECTION (AIDS) AND OTHER SEXUALLY TRANSMITTED DISEASES. DESCRIPTION Each Trivora cycle of 28 tablets consists of three different drug phases as follows: Phase 1 comprised of 6 blue tablets, each containing 0.050 mg of levonorgestrel (d(-)-13 beta-ethyl-17-alpha-ethinyl-17- beta-hydroxygon-4-en-3-one), a totally synthetic progestogen, and 0.030 mg of ethinyl estradiol (19- nor-17α-pregna-1,3,5(10)-trien-20-yne-3, 17-diol); phase 2 comprised of 5 white tablets, each containing 0.075 mg levonorgestrel and 0.040 mg ethinyl estradiol; and phase 3 comprised of 10 pink tablets, each containing 0.125 mg levonorgestrel and 0.030 mg ethinyl estradiol; then followed by 7 peach inert tablets. The inactive ingredients present in the blue, white and pink tablets are lactose monohydrate, magnesium stearate, povidone and starch (corn). Each blue tablet also contains FD&C Blue #1. Each pink tablet also contains FD&C Red #40. Each inactive peach tablet contains the following inactive ingredients: anhydrous lactose, FD&C Yellow #6, lactose monohydrate, magnesium stearate and microcrystalline cellulose. CLINICAL PHARMACOLOGY Combination oral contraceptives primarily act by suppression of gonadotropins. Although the primary mechanism of this action is inhibition of ovulation, other alterations include changes in the cervical mucus (which increase the difficulty of sperm entry into the uterus) and the endometrium (which reduce the likelihood of implantation). PHARMACOKINETICS _Absorption_ Levonorgestrel is rapidly and completely absorbed after oral administration (bioavailability about 100%). Levonorgestrel is not subject to first-pass metabolism or enterohepatic circulation and therefore does not undergo variations in absorption after oral adminis Pročitajte cijeli dokument