Plan B (Morning-After Pill): Effectiveness and Side Effects

Plan B is a morning-after pill, also known as emergency contraception or EC. It is a safe and effective way to prevent pregnancy after unprotected sex or contraceptive failure. Plan B works by delaying ovulation, which is the release of an egg from the ovary.

Plan B is most effective when taken within 72 hours of unprotected sex. However, it can still be effective if taken up to 120 hours (5 days) after sex. The sooner you take Plan B, the more effective it will be.

Plan B is very effective at preventing pregnancy. It can reduce your risk of pregnancy by up to 87%. However, it is important to note that Plan B is not perfect. There is still a chance of getting pregnant, even if you take Plan B correctly.

Plan B is generally safe for most women to take. However, there are some potential side effects, including:

  • Nausea and vomiting
  • Abdominal pain
  • Headache
  • Breast tenderness
  • Fatigue
  • Menstrual changes, such as a heavier or lighter period or a delayed period

These side effects are usually mild and go away on their own within a few days. If you have any concerns about the side effects of Plan B, talk to your doctor.

Plan B is available over-the-counter at most pharmacies. You do not need a prescription to get Plan B.

If you are considering taking Plan B, it is important to talk to your doctor first. They can help you decide if Plan B is right for you and can answer any questions you have.