Levonorgestrel Tablets

Therapeutic Indication

Emergency contraception

Prevention of unplanned pregnancy

Effective if taken within 72 hours of unprotected intercourse

+91 85919 78885

Levonorgestrel

Tablet

Levonorgestrel is a synthetic progestogen used as an emergency contraceptive. It works by delaying ovulation, preventing fertilization, and altering the endometrial lining to reduce the chance of implantation. It is most effective when taken within 24 hours of unprotected intercourse.

Speciality	Emergency Contraceptive
Tags	Contraception \| Emergency Pill \| Pregnancy Prevention
Strength	1.5 mg (single dose)
Packing Size	1 Tablets

Check all Tablet Range

Click to know More

Mechanism

Levonorgestrel prevents pregnancy primarily by inhibiting or delaying ovulation. It also thickens cervical mucus, making it difficult for sperm to reach the egg, and alters the endometrial lining to reduce chances of implantation.

Effectiveness

Within 24 hours: ≈95% effective
25–48 hours: ≈85% effective
49–72 hours: ≈58% effective

Pharmacokinetics

Absorption: Rapid oral absorption
Distribution: Widely distributed, binds to plasma proteins
Metabolism: Hepatic metabolism via CYP3A4
Elimination: Renal and fecal excretion
Half-life: 24–30 hours

Side Effects

Nausea and vomiting
Abdominal pain
Dizziness
Menstrual irregularities
Breast tenderness

Contraindication

Known or suspected pregnancy
Hypersensitivity to Levonorgestrel

Interaction

Enzyme inducers: Rifampicin, phenytoin, carbamazepine, barbiturates — may reduce effectiveness
Herbal products: St. John’s Wort — decreases plasma levels
Antiretrovirals: Ritonavir, efavirenz — may lower contraceptive efficacy
Other hormonal contraceptives: Potential additive effects

Warning and Precautions

Not intended for regular contraception
Menstrual delay >1 week requires pregnancy test
Use cautiously in patients with liver disease