Mebendazole
Also sold as: Vermox
No prescription neededWorm and parasite medicines
Comes as:Chewable tabletTabletSuspension
Usual adult dose
Usual dose for adults and children over 2 years: 100 mg twice a day for 3 days, or 500 mg as a single dose. Threadworm: 100 mg once, repeated after 2 weeks.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- stomach pain
- diarrhoea
- gas
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- severe allergic reaction
- severe skin rash (higher risk with metronidazole)
- seizures in very young children
Do not take it, or take care, if
- Pregnancy, especially the first 3 months
- Children under 1 year
- Taking metronidazole at the same time
Interactions
Medicines that can react with this one.
Serious1 medicineDo not take these together unless your doctor says so.
- Metronidazole
Taking mebendazole and metronidazole together has been linked to severe skin reactions; avoid the combination.