Mebendazole

De-worming
ALSO SOLD WITHOUT PRESCRIPTION

Mebendazole is a de-worming found in 1 medicine sold in India, such as Mebex. Below: what it is for, how it works, how to take it, side effects, interactions and pregnancy advice.

What it is used for

Treats threadworm, roundworm and hookworm.

How it works

A de-worming medicine for pinworm (threadworm), roundworm and whipworm.

How to take it

Threadworm: 100 mg once, repeated after 2 weeks; treat the whole family and wash hands, nails and bedding.

Common side effects

  • Stomach pain
  • Diarrhoea
  • Wind

Get medical help straight away if

  • Rash or swelling
  • Severe stomach pain

Be careful

Not in pregnancy.

Other medicines and interactions

Metronidazole taken with it may raise skin reaction risk.

Pregnancy and breastfeeding

Avoid in the first three months of pregnancy; acceptable while breastfeeding.

Brands of Mebendazole (1)

Mebex

Common questions

What is Mebendazole used for?

Treats threadworm, roundworm and hookworm.

How does Mebendazole work?

A de-worming medicine for pinworm (threadworm), roundworm and whipworm.

How should I take Mebendazole?

Threadworm: 100 mg once, repeated after 2 weeks; treat the whole family and wash hands, nails and bedding.

What are the side effects of Mebendazole?

Common: Stomach pain, diarrhoea, wind. Get help straight away for: Rash or swelling, severe stomach pain.

Does Mebendazole interact with other medicines?

Metronidazole taken with it may raise skin reaction risk.

Is Mebendazole safe in pregnancy and breastfeeding?

Avoid in the first three months of pregnancy; acceptable while breastfeeding.

Does Mebendazole need a prescription in India?

It is usually sold without a prescription in India, but ask a pharmacist if you take other medicines or have a long-term illness.

Which brands contain Mebendazole?

Mebex.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Last reviewed 31 October 2026. Written by Satya Babu from standard prescribing information.

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For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.