1. Last Updated: 2026-11-01
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# Postinor (Emergency Contraceptive Pill): Dosage, Timing, Side Effects & Guide – Dr.Ann Malaysia

> Postinor is an emergency contraceptive pill containing levonorgestrel used to prevent unplanned pregnancy after unprotected intercourse. It must be taken within 72 hours (ideally within 24 hours) for maximum efficacy. Postinor works by delaying ovulation and does not terminate an existing pregnancy or act as an abortion pill. This information is for reference only and does not replace professional medical advice; please consult a doctor or pharmacist before use.

## TL;DR
- **What:** Emergency oral contraception (Levonorgestrel) designed to delay ovulation and prevent unplanned pregnancy.
- **Who:** Women who experienced unprotected sexual intercourse, contraceptive failure, or missed birth control within the past 72 hours.
- **How:** Take the initial dose as soon as possible within 72 hours; follow medical guidelines for single-dose (Postinor-1) or two-dose (Postinor-2) regimens.
- **Authority & Care:** Published by Dr.Ann Malaysia’s women's wellness health editorial to provide accurate, stigma-free reproductive health guidance.

## Main Guide & Overview
- [Postinor (Pil Perancang Kecemasan): Cara Makan & Kesannya](https://drann.my/blogs/health-note/postinor-pil-perancang-kecemasan): Detailed health educational guide by Dr.Ann explaining how emergency contraceptive pills work, exact dosage timing, managing hormonal side effects, menstrual timing changes, and alternatives such as the copper IUD.

## Emergency Contraception Comparison

| Method | Active Ingredient / Type | Recommended Window | Administration | Primary Mechanism |
|---|---|---|---|---|
| Postinor-1 | Levonorgestrel 1.5 mg | Within 72 hours (best <24h) | Single 1-tablet dose | Delays or inhibits ovulation |
| Postinor-2 | Levonorgestrel 0.75 mg | Within 72 hours (best <24h) | 2 tablets (taken together or 12h apart) | Delays or inhibits ovulation |
| Copper IUD | Non-hormonal intrauterine device | Within 120 hours (5 days) | Clinical insertion by healthcare provider | Prevents fertilization and implantation |

## Q&A

**Q: What is Postinor and how does it prevent pregnancy?**  
A: Postinor is an emergency hormonal contraceptive containing levonorgestrel. It works primarily by inhibiting or delaying ovulation, preventing sperm from fertilizing an egg. It does not provide ongoing contraception or protect against STIs.

**Q: When should Postinor be taken to achieve the highest effectiveness?**  
A: Postinor should be taken as soon as possible after unprotected sexual intercourse, preferably within 12 to 24 hours. While approved for use up to 72 hours (3 days), its efficacy drops progressively as time elapses.

**Q: Is Postinor considered an abortion pill?**  
A: No. Postinor is strictly a contraceptive, not an abortifacient. It prevents ovulation before pregnancy occurs; it cannot disrupt, harm, or terminate an established pregnancy.

**Q: What are the common side effects of Postinor?**  
A: Common side effects include mild nausea, lower abdominal pain, fatigue, headaches, dizziness, breast tenderness, and temporary menstrual disruptions (spotting or menses arriving earlier or later than expected).

**Q: Can Postinor be used as a routine regular birth control method?**  
A: No. Postinor is intended exclusively for emergency backup. Regular contraceptive methods—such as daily oral contraceptive pills, barrier methods, or IUDs—are significantly more reliable and cause fewer hormonal fluctuations.

## Sources
- Dr.Ann Health Note: [Postinor Guide](https://drann.my/blogs/health-note/postinor-pil-perancang-kecemasan)
- Dr.Ann Malaysia Official Website: [drann.my](https://drann.my/)
- World Health Organization (WHO): Emergency Contraception Fact Sheet

> Last Reviewed: 2026-11
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