Postinor‑2 is an emergency contraceptive pill used to prevent pregnancy after unprotected sex or contraceptive failure (for example, a burst condom), not to end an existing pregnancy.

Quick Scoop – What Postinor‑2 Does

  • It is a “morning‑after pill,” not a regular family‑planning method.
  • The active ingredient is levonorgestrel, a synthetic hormone similar to progesterone.
  • Its main work is to reduce the chance of pregnancy if taken as soon as possible within 72 hours after unprotected intercourse.

How It Works in the Body

Postinor‑2 works before pregnancy is established. It mainly:

  1. Delays or prevents ovulation – stops or delays the release of an egg from the ovary so sperm have nothing to fertilize.
  1. May affect fertilization – can change the movement of sperm and egg so they are less likely to meet.
  1. May prevent implantation – can make it harder for a fertilized egg to attach to the womb lining, although the main effect is on ovulation.

It does not work if you are already pregnant and does not harm an existing pregnancy.

How Effective Is It?

  • Overall, it prevents about 85% of expected pregnancies when used correctly.
  • If taken within 24 hours, protection is around 95%; effectiveness drops the longer you wait (down to about 58% between 48–72 hours).
  • It is for emergency use only , not something to take regularly after every sex act.

Common Side Effects You Might Notice

Not everyone gets side effects, but typical ones include:

  • Nausea or vomiting
  • Tiredness or general weakness
  • Headache or dizziness
  • Breast tenderness
  • Lower abdominal pain or cramps
  • Changes in your next period (earlier, later, heavier, or lighter than usual)

If you vomit within about 2–3 hours after taking a tablet, you may need another dose, so speak to a health professional.

Important Safety Points

  • It does not protect against sexually transmitted infections (STIs); only condoms do that.
  • It should not replace a reliable, regular contraceptive method (like pills, implants, or IUDs).
  • If your next period is more than about a week late, or is unusually light, take a pregnancy test or see a clinician.

Mini “Forum‑Style” View

“I took Postinor‑2 after the condom broke. What is its work?”
Its job is simply to give you a second chance at preventing pregnancy after that accident, by delaying ovulation and reducing the chance that sperm can fertilize an egg.

TL;DR: Postinor‑2 is an emergency pill that works mainly by delaying ovulation so pregnancy is less likely if taken within 72 hours of unprotected sex; it is not an abortion pill and should not be used as regular contraception.

Information gathered from public forums or data available on the internet and portrayed here.