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Other brands with the same active ingredient

These brands contain the same active ingredient (Mebendazole). Same strength and form. Confirm the switch with your doctor or pharmacist.

Indications & Uses

Seemox is used to treat infections caused by threadworms, whipworms, roundworms and hookworms.

Pharmacology

Mebendazole is a synthetic, broad-spectrum anthelmintic effective against most nematodes and several other worm species. It is mainly used to treat intestinal nematode infections. It works by blocking the formation of microtubules within the worms and depleting their glucose stores, which the worms need to survive.

When taken by mouth, only about 2-10% of the dose is absorbed from the gut, with blood levels peaking anywhere between 30 minutes and 7 hours after intake. Once absorbed, mebendazole binds extensively to plasma proteins, and it is cleared from the body with a half-life of roughly 2.8 to 9 hours.

Dosage Reference

Reference Information Only

Dosages shown are general references from official sources. Always consult your doctor or pharmacist for personalized dosing.

Adults:

For adults and children over 2 years, threadworms are treated with a single dose of 100 mg, or 1 teaspoonful. For whipworms, roundworms and hookworms, the dose is 100 mg, or 1 teaspoonful, taken twice daily for 3 days. If reinfection occurs, a second dose may be needed after 2 weeks.

Side Effects

Gastrointestinal: Passing abdominal pain and diarrhoea may occur when the infection is heavy and worms are being expelled. Hypersensitivity: Rash, urticaria (hives) and angioedema have been seen on rare occasions. Central nervous system: Very rare cases of convulsions have been reported. Haematologic: Neutropenia and agranulocytosis.

Cautions & Contraindications

Warnings & Precautions

General: During prolonged therapy, it is advisable to carry out periodic assessment of organ system functions, including haematopoietic and hepatic function. Information for patients: Patients should be informed of the potential risk to the foetus in women taking Seemox during pregnancy, especially during the first trimester. Patients should also be informed that cleanliness is important to prevent reinfection and transmission of the infection.

Contraindications

Mebendazole should not be used by anyone known to be allergic to Mebendazole or to any other ingredient in the product.

Pregnancy & Breastfeeding

Mebendazole isn't recommended for use during pregnancy. It isn't known whether the drug passes into human breast milk, but because many medicines do, breastfeeding mothers should use it with caution.

⚠️ Talk to your doctor before taking any medicine during pregnancy or while breastfeeding.

Use in Special Populations

Mebendazole has not been studied extensively in children under two years of age. For this reason, when a child under two needs treatment, the likely benefit should be weighed against the risk.

Overdose

If someone takes too much Mebendazole by accident, stomach and bowel complaints may follow, and these can last for up to a few hours. Vomiting and purging should be induced.

⚠️ In an emergency call 999 or go to the nearest hospital emergency department.

Storage

Store in a cool (Below 25°C temperature) and dry place, protected from light. Keep out of the reach of children.

Drug Interactions

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Moderate Cimetidine

Common questions about Madnil 100 mg

What is Madnil 100 mg Tablet?

Madnil 100 mg Tablet is a medicine that contains Mebendazole. It is made by Bengal Drugs & Chemical Works Pharm. Ltd. It belongs to the Anthelmintic group of medicines.

What is Madnil used for?

Seemox is used to treat infections caused by threadworms, whipworms, roundworms and hookworms.

What are the side effects of Madnil?

Gastrointestinal: Passing abdominal pain and diarrhoea may occur when the infection is heavy and worms are being expelled. Hypersensitivity: Rash, urticaria (hives) and angioedema have been seen on rare occasions.

Can I take Madnil during pregnancy or while breastfeeding?

Mebendazole isn't recommended for use during pregnancy. It isn't known whether the drug passes into human breast milk, but because many medicines do, breastfeeding mothers should use it with caution. Talk to your doctor before taking any medicine during pregnancy or while breastfeeding.

What happens if I take too much Madnil?

If someone takes too much Mebendazole by accident, stomach and bowel complaints may follow, and these can last for up to a few hours. Vomiting and purging should be induced. In an emergency call 999 or go to the nearest hospital emergency department.

How should I store Madnil?

Store in a cool (Below 25°C temperature) and dry place, protected from light. Keep out of the reach of children.

Can I take other medicines with Madnil?

Some medicines can interact with Mebendazole, for example: Cimetidine. Tell your doctor or pharmacist about every medicine you take.

Do I need a prescription for Madnil?

Madnil is a prescription (Rx) medicine. Take it as your doctor advises.

Last updated: 15 Aug 2026