Levonorgestrel (Emergency Pill): uses, side effects & brands
Written & medically reviewed by Dr. Sanjay Anbu, MBBS· Last reviewed
Levonorgestrel emergency contraception is taken after unprotected sex, ideally within 72 hours. It belongs to the Hormonal & contraceptive medicine group. These provide contraception or hormone treatment for menopause and related conditions.
Combined (oestrogen) types raise clot risk — not for smokers over 35 or clot history
Emergency pills work best taken as soon as possible
Regular review with your doctor
When to see a doctor urgently
Leg pain/swelling or breathlessness (clot)
Severe headache/migraine with aura, or vision changes
Chest pain
Not a prescription — no dose shown. The right dose of levonorgestrel depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
How soon should I take the emergency pill?
As soon as possible after unprotected sex — levonorgestrel works best within 72 hours, and sooner is more effective.
Is hormone replacement therapy (HRT) safe?
For many women around menopause the benefits outweigh the risks, but it depends on your age and health. Your doctor helps weigh it up.
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.