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What is it

Tinidazole is an antiprotozoal as well as an antibiotic that helps kill certain parasitic and bacterial infections.

Brand names with manufacturer

Fasigyn, Simplotan, Tindamax, Sporinex

Type: OTC/prescription/schedule

This is a prescription only drug and for sale by retail counter only after procuring a doctor’s prescription.



Tinidazole is an antiprotozoal and used to treat certain types of parasitic infections like giardiasis, amebiasis. It is also used to treat bacterial infections such as bacterial vaginosis and trichomoniasis. The drug belongs to a class of antibiotics that are called as nitromidazoles.


This drug is effective only on bacterial and protozoal infections. It has no effect on viral infections like common cold, flu, etc.

What should I know before taking this drug

Take the drug exactly as prescribed by your doctor. This will avoid the development of stomach upset after taking the drug.

How to take it

One should take Tinidazole with food as it will reduce gastrointestinal side-effects. However, avoid using alcohol when taking Tinidazole and for about 3 days after taking the drug.

If any problem in swallowing the tablet, speak to your doctor or pharmacist.

Adverse reactions/side effects

Some of the common side effects of Tinidazole include:

  • Constipation/ diarrhea
  • Dizziness
  • General fatigue
  • Headache
  • Loss of appetite
  • Nausea/ vomiting
  • Bitter taste in mouth
  • Weakness

There can be some serious side effects after taking the drug. This requires immediate medical attention, such as:

  • Severe allergic reaction like swelling of the lips, mouth, tongue, or breathing problems, etc.
  • Abnormal skin rash or sensations such as prickling or tingling
  • Depression
  • Fever
  • Chills
  • Red, swollen peeling or blistering skin
  • Shortness of breath
  • Vaginal irritation or discharge
  • Sore throat
  • Numbness or loss of sensation in hands or feet

When not to take the medicine

Do not use Tinidazole, if:

  • You are allergic to other nitromidazole medicines or any other ingredient in Tinidazole
  • Suffer from porphyria
  • Using astemizole, cisapride, terfenadine
  • Used disulfiram any time within the last 2 weeks
  • Are in your first trimester of pregnancy

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The safety and effectiveness of Tinidazole in children under 3 years of age is yet to be confirmed. Thus, do not use in children under 3 years of age.

Pregnant women

If you think  you are pregnant and in your first 3 months of pregnancy, avoid Tinidazole. It may harm your fetus. Discuss with doctor before taking the medicine.

Lactating women

Tinidazole can be secreted in breast milk. Do not feed a nursing baby when using Tinidazole. Also, avoid feeding the baby for at least 3 days after the last dose.


Do not use the medicine if you have brain, nerve or blood problems. Those with a history of seizures, liver problems or yeast infections should avoid Tinidazole.

Those undergoing dialysis should inform the doctor beforehand about their condition.

What should I do if

I miss dose(s)

If you miss a dose, take it as soon as you remember it. If it is almost time for the next dose, skip it.

I take an overdose

Never taken and overdose. If you have taken more than 2 doses at one time, call your doctor immediately.

What to discuss with the doctor/pharmacist

Drug interactions

Speak to your doctor about any drugs or supplements you are already taking. Some drugs and supplements can lead to interactions with Tinidazole. Tell your doctor about:

  • Barbiturates
  • Anticoagulants
  • Disulfiram
  • Azole antifungals

If you are using birth control pills, Tinidazole may decrease their effectiveness. Thus, discuss other forms of birth control with your doctor when using Tinidazole.

If you are using Cholestyramine, tell your doctor. You cannot take Cholestyramine at the same time when you use Tinidazole.

Dosage form

Tinidazole is available in the form of tablets.


Take Tinidazole exactly as advised by the doctor. The dose depends on the type and severity of the infection. Those with vaginal or dental infections are given a single dose of four tablets.

In case of other bacterial infections, one may have to take four tablets a day on the first day of the treatment. Then, the dose is reduced to 2 tablets for five or six days. In some cases, it is reduced to 4 tablets a day for a week. Those with stomach ulcer are asked to take a tablet of Tinidazole two times a day for 7 days.

Make sure you space you tablets evenly throughout the day. Never skip or stop Tinizadole before the course is over. It may lead to relapse and return of the symptoms.


Store tinidzole at room temperature. Keep away from heat, light and moisture. Keep away from children and pets. Do not store the medicine in the bathroom.

Additional information, if any

Tinidazole can lead to dizziness or drowsiness. Thus, avoid driving or operating machines, till you are not sure how your body reacts to the drug.

Written by: healthplus24.com team

Date last updated: June 18, 2015