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LevonorgestrelOver the counter
Pronounced lee-vo-nor-JES-trel
Brand names: Plan B, Mirena, Kyleena
Type: Progestin hormone and contraceptive · All Women's Health Medicines
What Levonorgestrel is used for
- Emergency contraception after unprotected sex (tablets)
- Long-term contraception (hormonal IUDs)
- Treating heavy menstrual bleeding (IUD)
Common side effects
- Nausea
- Irregular bleeding
- Headache
- Breast tenderness
- Cramping after IUD placement
Important cautions
- Emergency contraception works best the sooner it is taken and is less effective at higher body weights — a pharmacist or clinician can advise on alternatives such as a copper IUD
- Hormonal IUDs must be placed and removed by a clinician, and a missing string or severe pelvic pain needs prompt review
How it comes
Tablets, intrauterine devices (clinic). This guide lists forms only — it never lists strengths or doses.
Related medicines — Women's Health Medicines
Condition guides on MedicalVideos.com
- Contraception — videos, articles and guides · medicines for contraception
- Fertility — videos, articles and guides · medicines for fertility
- Pregnancy — videos, articles and guides · medicines for pregnancy
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.