Tinidazole
Also sold as: Fasigyn
Prescription neededWorm and parasite medicines
Comes as:Tablet
Usual adult dose
Usual adult dose: 2 g as a single dose with food (giardia, trichomonas). Amoebic dysentery: 2 g once a day for 3 days. No alcohol during treatment and for 72 hours after.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- nausea
- metallic taste
- loss of appetite
- headache
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- severe allergic reaction
- numbness or tingling in hands and feet
- seizures
Do not take it, or take care, if
- Drinking alcohol during treatment and for 72 hours after
- First 3 months of pregnancy
- Breastfeeding (stop for 3 days after the dose)
- Blood disorders or nerve disease
Interactions
Medicines that can react with this one.
Serious1 medicineDo not take these together unless your doctor says so.
- Warfarin
Tinidazole raises the effect of warfarin and the risk of bleeding; INR must be checked.
Moderate1 medicineTake together only with care. Ask your doctor or pharmacist.
- Lithium carbonate
Tinidazole can raise lithium levels.