Larissia

Generic name:levonorgestrel and ethinyl estradiol
Dosage form: tablets
Drug class:Contraceptives

Medically reviewed by Drugs.com. Last updated on Apr 21, 2022.

Larissia Description

Each active, white tablet (21) contains 0.1 mg of levonorgestrel, USP, d(-)-13β-ethyl-17α-ethinyl-17β-hydroxygon-4-en-3-one, a totally synthetic progestogen, and 0.02 mg of ethinyl estradiol, USP, 17α-ethinyl-1,3,5(10)-estratriene-3, 17β-diol. The inactive ingredients present are lactose monohydrate, magnesium stearate, microcrystalline cellulose, polacrilin potassium and Aqua Polish White 014.17 MS which contains hydroxypropylcellulose, hydrogenated cottonseed oil, hydroxypropylmethylcellulose, talc, and titanium dioxide.

Each inactive, yellow tablet (7) contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose, polacrilin potassium and Aqua Polish Yellow 024.15 MS which contains hydroxypropylcellulose, hydrogenated cottonseed oil, hydroxypropylmethylcellulose, ferric oxide red, ferric oxide yellow, talc, and titanium dioxide.

Larissia - Clinical Pharmacology

Mode of Action

Combination oral contraceptives 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

No specific investigation of the absolute bioavailability of levonorgestrel and ethinyl estradiol in humans has been conducted. However, literature indicates that levonorgestrel is rapidly and completely absorbed after oral administration (bioavailability about 100%) and is not subject to first-pass metabolism. Ethinyl estradiol is rapidly and almo...