Norethindrone

Pronounced nor-eth-IN-drone

Brand names: Micronor, Aygestin

Type: Progestin hormone and contraceptive · All Women's Health Medicines

What Norethindrone is used for

  • Birth control (progestin-only pill)
  • Treating endometriosis and abnormal uterine bleeding (higher-amount product)
  • Delaying periods (clinician-directed)

Common side effects

  • Irregular bleeding
  • Headache
  • Breast tenderness
  • Nausea
  • Mood changes

Important cautions

  • The contraceptive pill form must be taken at the same time every day — being late by even a few hours reduces protection

How it comes

Tablets. This guide lists forms only — it never lists strengths or doses.

Condition guides on MedicalVideos.com

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.