
Levonorgestrel
Levonorgestrel — Emergency Contraception
Levonorgestrel is the most widely used active ingredient in emergency contraception worldwide. It prevents pregnancy after unprotected sex or contraceptive failure (e.g. condom breakage, missed contraceptive pills). Levonorgestrel emergency contraception must be taken as soon as possible — within 72 hours. Intimo Life offers two Levonorgestrel brands.
💊 Levonorgestrel emergency contraception in 2 brands — single-tablet and two-tablet options available.
👨⚕️ Consult a pharmacist online instantly — no travel, no queues, completely private and convenient.
🚚 Fast, confidential delivery — plain packaging with no product names on the outside, delivered safely to your door.
Levonorgestrel is a synthetic progestin hormone used as the global standard for emergency contraception. Endorsed by the WHO and Thai FDA with over 30 years of safety data.
📊 Key facts about Levonorgestrel emergency contraception:
- Most effective within the first 24 hours — prevents pregnancy in up to 95% of cases
- Within 24-48 hours — effectiveness drops to 85%
- Within 48-72 hours — effectiveness drops to 58%
- The sooner you take it, the better it works
💊 At Intimo Life:
- Tansy One — Single tablet, full dose of Levonorgestrel 1.5 mg. One and done.
- Postinor — Two tablets, Levonorgestrel 0.75 mg each, taken 12 hours apart.
⚠️ Emergency contraception is for emergencies only — not a regular contraceptive method. For ongoing protection, see contraceptive pills.
Available Treatments
About Levonorgestrel
What Is Levonorgestrel? How Does It Work?
Levonorgestrel is a synthetic progestin hormone. When used as emergency contraception at a high dose (1.5 mg), it prevents pregnancy through several mechanisms.
🔬 How it works:
- Inhibits or delays ovulation — The primary mechanism. If the egg hasn't been released, Levonorgestrel prevents it from being released, so there's no egg to fertilise.
- Thickens cervical mucus — Making it harder for sperm to reach the egg.
- Not an abortion pill — Levonorgestrel does not affect an already-implanted embryo. If pregnancy has occurred, the medication will not cause a miscarriage and poses no harm to the baby.
Tansy One vs Postinor — What's the Difference?
Same active ingredient (Levonorgestrel), different format.
Tansy One — Single tablet
- Levonorgestrel 1.5 mg in one tablet
- Take once — done. No second dose to remember.
- Maximum convenience, eliminates the risk of forgetting the second tablet.
Postinor — Two tablets
- Levonorgestrel 0.75 mg per tablet
- Take the first immediately, second 12 hours later
- Same total dose (1.5 mg)
Bottom line: Same effectiveness (same total dose of 1.5 mg). Tansy One is more convenient as a single dose. Postinor requires remembering the second tablet.
How to Take Levonorgestrel Emergency Contraception
⏰ Take as soon as possible — Effectiveness decreases with every passing hour. Take immediately — don't wait.
Tansy One — Take 1 tablet. Done.
Postinor — Take the first tablet immediately. Take the second 12 hours later (no more than 24 hours).
🍽️ With or without food — No dietary restrictions.
🤮 If you vomit within 2 hours — Take a replacement dose, as the medication may not have been absorbed. Consult a pharmacist.
How Effective Is Levonorgestrel Emergency Contraception?
The earlier you take it, the more effective it is.
📊 Pregnancy prevention rates:
- Within 12 hours → Highest effectiveness
- Within 24 hours → 95% prevention
- Within 24-48 hours → 85% prevention
- Within 48-72 hours → 58% prevention
- After 72 hours → Very low effectiveness — not recommended
⚠️ Important: Emergency contraception is not 100% effective even when taken early. If your period is more than 1 week late after taking emergency contraception, take a pregnancy test.
Side Effects
Most side effects are mild and resolve within 1-2 days.
Common — Nausea (most common, approximately 15-25%) / vomiting / headache / fatigue / mild breast tenderness
Effects on your period — Your period may arrive 1-2 weeks earlier or later than expected / spotting between periods / the next period may be heavier or lighter than usual. All of this is normal.
Important: Side effects are temporary only. There is no impact on long-term health or future fertility.
Can I Use Emergency Contraception Frequently?
Levonorgestrel emergency contraception is safe. According to the WHO, there is no limit on how often it can be used. However, it's not recommended as a primary contraceptive because:
- It's far less effective than regular contraceptive pills (daily pill 99%+ vs emergency pill 58-95%)
- More side effects with frequent use (nausea, irregular periods)
- More expensive in the long run
💡 Recommendation: If you find yourself needing emergency contraception frequently, consult a pharmacist about finding a suitable regular contraceptive.
Emergency Contraception vs Daily Contraceptive Pills
Levonorgestrel emergency contraception — Used after unprotected sex (within 72 hours) / emergency use only / 58-95% effective depending on timing / temporary side effects (nausea, period changes)
Daily contraceptive pills — Taken daily for advance protection / 99%+ effective when used correctly / helps regulate periods, reduces period pain, improves acne / ideal for long-term contraception
Contraindications and Precautions
Levonorgestrel emergency contraception has very few contraindications and is considered highly safe.
✅ Safe for use by — Almost all women of reproductive age / breastfeeding women (safe) / women with most pre-existing conditions
⚠️ Precautions — Known allergy to Levonorgestrel / known pregnancy (no benefit, but not harmful) / body weight above 75 kg may reduce effectiveness — consult a pharmacist
What to Do After Taking Emergency Contraception
📅 Wait for your period — It should arrive around the normal time, or 1-2 weeks early or late.
🧪 Take a pregnancy test — If your period is more than 1 week late.
🛡️ Use contraception going forward — Emergency contraception doesn't protect against future encounters. Use condoms or another method immediately.
💊 Consider regular contraception — If you don't currently have one, this is a good time to start. Consult a pharmacist about contraceptive pills that suit you.
Where Can I Buy Levonorgestrel Emergency Contraception?
Emergency contraception must be taken as soon as possible — the sooner, the better. You can order Levonorgestrel emergency contraception online at Intimo Life in a few simple steps:
- Consult a pharmacist online to assess your situation and choose the right brand
- Once the pharmacist confirms the medication is suitable, place your order for Tansy One or Postinor
- Receive your medication at home — confidential delivery in plain packaging with no product names
No need to visit a pharmacy, no queues. Consult a pharmacist from the comfort of your home — convenient, fast, and private.
⚠️ Disclaimer
The information on this page is for general informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment from a qualified doctor or pharmacist. If you have any questions about your symptoms or medication, always consult a doctor or pharmacist first.
Frequently Asked Questions
Same drug (Levonorgestrel), same total dose (1.5 mg), same effectiveness. Tansy One is more convenient — one tablet, done. Postinor requires two tablets 12 hours apart. Choose based on convenience.
Effectiveness drops significantly after 72 hours. Some research suggests it may still help up to 120 hours, but this is not guaranteed. Consult a pharmacist immediately.
No. Levonorgestrel prevents ovulation. It has no effect on an already-implanted embryo. If pregnancy has occurred, it won't cause a miscarriage and won't harm the baby.
Not dangerous — it's safe with no usage limits. However, it's not recommended as your primary contraceptive because it's far less effective than daily pills. If you need it frequently, switch to regular contraception.
If vomiting occurred within 2 hours of taking the tablet, yes — take a replacement dose as the medication may not have been absorbed. After 2 hours, no replacement is needed.
Evidence suggests effectiveness may decrease for women weighing over 75 kg. However, it's still recommended to take it, as some protection is better than none. Consult a pharmacist about alternative options.
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