Levonorgestrel
SHARE
Molecule Summary
| Uses | Emergency contraception |
| Therapy | Drugs Acting On Uterus |
| Side Effects | nausea, vomiting, dizziness, drowsiness, blurred vision, excessive vaginal bleeding, breast tenderness or pain, weight gain, menstrual period changes, headache, spotting or bleeding between menstrual periods, diarrhoea, tiredness |
Medicines
available
19k pincodes
Molecule Description
Levonorgestrel is used by women as an emergency contraception to prevent unwanted pregnancy. It should not be used as a regular contraceptive method. This medication can be used when other contraceptive method fails (broken condom) or when contraception is not used. Levonorgestrel should be consumed within 72 hours of unprotected intercourse for it to work.
Uses
- As per CDSCO, Levonorgestrel should be used as emergency contraception (to prevent unwanted pregnancy).
Contraindications
When should one not use Levonorgestrel
- If you are allergic to any ingredient of Levonorgestrel
- If you are having an episode of abnormal vaginal bleeding
- If you are already pregnant
- If you have a certain type of breast cancer
- If you have a blood clotting disorder, this medicine increases the chances of blood clots
- If you have a certain blood disorder like Porphyria
- If you had a history of stroke or a bleeding disorder
Side effects
Common side effects of this drug are:
- Heavy bleeding from the vagina
- Nausea
- Vomiting
- Dizziness
- Spotting or bleeding between menstrual periods
- Tiredness
- Breast pain or tenderness
- Headaches
- Diarrhoea
Precautions and Warnings
Pregnancy
Breast Feeding
Driving
Alcohol
Other General Warnings
Talk to your doctor if
- You experience changes in onset and duration of the menstrual period after using Levonorgestrel. It can increase or lower the bleeding.
- You experience weight gain.
- You are obese, this medicine may not work.
- You are planning a surgery.
- You have an infection and are using antibiotics.
- You have a sexually transmitted disease; this medicine does not protect you from them.
- You are feeling dizzy or tired.
- You have a liver or kidney problem, this medicine should be used with caution to prevent side effects.
- You have diabetes, use caution and monitor the blood sugar levels
- You have a family history of breast or ovarian cancer.
- You have been diagnosed with asthma, migraine, seizure disorder, heart condition, etc.
- You have been diagnosed with depression. This medicine should be used with caution.
- You have an ectopic pregnancy (pregnancy outside the uterus); this medicine does not prevent it.
Mode of Action
How Does It Work?
Levonorgestrel belongs to the progestins class of medications. It works by binding to receptors of progesterone and androgen (hormones). This slows down the release of certain hormones that are responsible for ovulation (release of the egg from the ovary). Once the levels of these hormones fall, ovulation does not occur, which prevents pregnancy. This medicine also prevents fertilisation of the egg and the sperm. It also causes changes in the lining of the uterus to prevent the development of the pregnancy.
Interactions
Interactions with other medicines
- Some medications can interfere with the functioning of Levonorgestrel, which may cause this medicine to not work. This can result in an unwanted pregnancy.
- A few of such medicines are:
- Certain antibiotics
- Medicines for seizure disorder
- HIV medicines
- Herbal medicines like St. John's wort, etc.
- Consult your doctor to know more.
Interactions with food items
- Grapefruit and its juice may increase the blood levels of Levonorgestrel. You may want to limit your consumption of grapefruit related products during treatment with Levonorgestrel.
Dosage
Overdose
Overdose of Levonorgestrel can cause symptoms like excessive nausea, vomiting, dizziness, menstrual cycle changes, changes in bleeding during menstruation, etc. This medicine should only be taken in emergency situations. It is not for regular use. Overdose of this medicine can be rare.
Missed a Dose
Levonorgestrel should only be taken in case of an emergency after the failure of birth control. Since it is used only when needed, it is unlikely that you will miss a dose. If you forget to take this pill within 72 hours after the intercourse, it can result in a pregnancy. If you have any doubts, consult a doctor.
Frequently Asked Questions (FAQs)
Articles
View AllDid you find this helpful?
References:
- Levonorgestrel: Medlineplus Drug Information [Internet]. MedlinePlus. U.S. National Library of Medicine; [cited 2026 Jun 5]. Available from:
- Patel SB; Toddywalla VS; Betrabet SS; Kulkarni RD;Patel ZM;Mehta AC;Saxena BN; At what 'infant-age' can levonorgestrel contraceptives be recommended to nursing mothers? [Internet]. Advances in contraception: the official journal of the Society for the Advancement of Contraception. U.S. National Library of Medicine; [cited 2026 Jun 5]. Available from:
- Kahlenborn C, Peck R, Severs WB. Mechanism of action of levonorgestrel emergency contraception [Internet]. The Linacre quarterly. Maney Publishing; 2015 [cited 2026 Jun 5]. Available from:
Explore More at Pharmeasy
Why trust PharmEasy?
# ONE OF INDIA'S MOST TRUSTED HEALTHCARE PLATFORM
CODAvailable
100%Genuine Medicine
30 DAYReturn Policy









