Antibiotic and Antiparasitic (Nitroimidazole)
Last reviewed July 2026
Who is this for?
Tinidazole is an antibiotic and antiparasitic drug that works by killing certain bacteria and parasites in the body, stopping them from growing and multiplying.
Inhibits microbial DNA synthesis by generating reactive free radicals through reduction of its nitro group, causing strand breaks and cell death in anaerobic bacteria and susceptible protozoa including Entamoeba, Giardia, and Trichomonas species.
Amoeba infection (amoebiasis), giardia infection (running stomach caused by parasites), bacterial vaginosis (vaginal infection with discharge and odour), trichomoniasis (sexually transmitted infection), dental infections, stomach ulcer caused by H. pylori bacteria
Prescription Required
You need a doctor's prescription to buy this drug.
Explore this drug
Since tinidazole is often taken as a single dose, missing it is uncommon. If your doctor prescribed it for multiple days and you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed one and do not double up.
Important for antibiotics
Always complete the full course even if you feel better. Stopping early can cause the infection to return and become drug-resistant.
Do NOT drink alcohol while taking tinidazole and for at least 3 days after finishing it, as mixing them can cause severe nausea, vomiting, stomach cramps and headache. Tinidazole can increase the effect of blood thinners like warfarin, increasing the risk of bleeding. If you are taking lithium or phenytoin (for seizures), let your doctor know as tinidazole can affect their levels in your blood.
Check your specific combination
Is it safe to take Tinidazole with your other drugs?
Tinidazole is not safe during the first three months of pregnancy and should be used with caution during breastfeeding. Always consult your doctor before taking it if you are pregnant or nursing.
Store in a cool, dry place away from direct sunlight and heat. Nigerian weather can be very hot, so avoid leaving it in your car or near windows. Keep it in its original pack and away from children.
For information only: not medical advice. Always talk to a doctor or pharmacist before changing your medication.
Names this drug is sold under, especially in Nigerian and West African pharmacies
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Counterfeit Drug Warning
Fake drugs are a serious problem in Nigeria. Always buy from a registered pharmacy. If the packaging looks different from what is described above, do not use it.