How does mebendazole work?
Mebendazole prevents worms from absorbing sugar, which they need to survive. Without sugar, the worms die and are expelled from the body through bowel movements.
What is mebendazole used to treat?
Mebendazole is commonly prescribed for:
- Threadworm (pinworm) infections
- Roundworm, whipworm, and hookworm infections
- Other intestinal worm infections (as directed by a doctor)
Who can take mebendazole?
Mebendazole is suitable for most adults and children over 2 years old.
Who might not be able to take mebendazole?
Mebendazole may not be suitable if you:
- Are pregnant or trying to conceive (it is not recommended in the first trimester)
- Have a history of severe liver disease
- Are taking certain medications that interact with mebendazole (check with your doctor or pharmacist)
Can I take mebendazole if I’m pregnant or breastfeeding?
Mebendazole isn’t usually recommended during pregnancy, particularly in the first trimester. If you are breastfeeding, speak to your doctor before using it.
What if I miss a dose?
If you forget a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed one—do not take two doses at once.
How effective is mebendazole?
Mebendazole is highly effective at killing worms, but a second dose may be needed after two weeks to ensure reinfection doesn’t occur.
What should I do if I take too much?
Taking too much mebendazole may cause stomach pain, nausea, or diarrhoea. If symptoms are severe, seek medical advice.
What dose of mebendazole is usually taken?
- For threadworms: One 100mg tablet (single dose), repeated after 2 weeks if necessary
- For other worm infections: 100mg twice daily for 3 days (as prescribed by a doctor)
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What are the side effects of mebendazole?
Common side effects include:
- Stomach pain or cramps
- Diarrhoea
- Flatulence (wind)
- Mild nausea
Serious side effects, such as severe allergic reactions or liver problems, require urgent medical attention.
How should I take mebendazole?
Mebendazole is taken as tablets or liquid, usually as a single dose for threadworms. The whole household may need to be treated to prevent reinfection.
When should mebendazole be taken?
Mebendazole can be taken at any time of the day, with or without food.
What are the brand names for mebendazole?
Mebendazole is available as a generic medicine, but some branded versions include:
- Ovex
- Vermox
Final thoughts
Mebendazole is an effective treatment for threadworms and other worm infections, but good hygiene practices are essential to prevent reinfection. If symptoms persist, speak to your doctor or pharmacist.
