Tinidazole: Overview of Uses, Side Effects, and Dosage Instructions

Tinidazole is an antibacterial drug belonging to the nitroimidazole class. It is effective against anaerobic bacteria but finds applications, especially in the treatment of parasitic and protozoan infestations.

Side effects

Tinidazole can induce various side effects, although not all patients experience them. This depends on the different sensitivity that each individual has towards the drug itself. Therefore, it is not certain that all adverse effects will manifest themselves with the same intensity in every patient.
Below are the main side effects that may occur during therapy with tinidazole.

Gastrointestinal disorders

Nausea and vomiting may occur during treatment with tinidazole. However, these effects rarely occur.


Tinidazole therapy can cause mild and temporary leukopenia, i.e., a decrease in the number of leukocytes in the blood circulation.

Nervous system disorders

Treatment with tinidazole can cause:


If you suspect that you have taken an excessive dose of tinidazole, you should go to the nearest hospital.
Gastric lavage may be useful to eliminate excess drugs from the body, then the patient will need to be kept under observation.

Instructions for Use – Dosage

Tinidazole is available for oral administration in tablet form.
The dose of tinidazole to be administered and the duration of treatment must be established by the doctor depending on the type and severity of the infection that is intended to be treated.
Below are some indications of the doses of tinidazole usually used in therapy.
If deemed necessary, the doctor can change the dosage of the drug, therefore it is necessary to strictly follow his instructions.

Trichomonas vaginalis infections

For the treatment of infections caused by Trichomonas vaginalista, the dose of tinidazole usually administered is 2 g, to be taken in a single dose.
Usually, a single administration is sufficient, but if the infection recurs, the treatment must be repeated after eight days.

Amoebiasis and lambliasis

For the treatment of amoebiasis and lambliasis, the dose of tinidazole usually varies from 500 mg to 1.5 g of active ingredient per day.
The amount of medicine administered is established by the doctor depending on the type of infection being treated. The duration of treatment is usually five days.


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