Tinidazole

Tinidazole
4.65 ratingsReviews
Generic:
Tinidazole
Indications:
infection of the intestines or vagina sexually transmitted infections
Analogs:
Fasigyn Tindamax Metronidazole Secnidazole Ornidazole Nitazoxanide Clindamycin Paromomycin Flagyl
You can buy Fasigyn (tinidazole) 500 mg OTC in our store. If needed, you can purchase a 4-tablet pack at once. The higher-strength option, Fasigyn DS (1 g), will be available soon.
In stock: 18 packs
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Tinidazole 500 mg

Quantity Price per tablet You save Total price
60 $1.77 - $106.00
90 $1.67 $9.00 $150.00
120 $1.62 $18.00 $194.00
180 $1.58 $33.00 $285.00
270 $1.55 $59.00 $418.00
360 $1.54 $83.00 $553.00

Manufacturers

Mission Pharmacal CompanyPfizerPfizer Limited

Payment & Shipping

Package Example

Your order is carefully packed and ships within 24 hours. Here is what a typical package looks like.

Sized like a regular personal letter (9.4x4.3x0.3 inches), with no indication of what is inside.

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Shipping Times
Shipping MethodEstimated delivery
Express Free for orders over $300.00Estimated delivery to the U.S.: 4-7 days
Standard Free for orders over $200.00Estimated delivery to the U.S.: 14-21 days
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Discount Coupons

  • Independence Day - July 4, 2026 10% JULY410
  • Labor Day - September 7, 2026 7% LABOR07
  • Thanksgiving - November 26, 2026 9% THANKS09

Brand Names

Also known as (by country):
CountryBrand Names
United States
Tindamax

FAQ

Tinidazole is a prescription-only medicine when purchased from local US pharmacies. Our store policy allows you to order it without a prescription and have it sent by mail. This ordering policy is separate from its prescription status in the United States.

Do not save leftover tinidazole for a future illness or give it to someone else. Dispose of unneeded tablets through a medication take-back program when available, following local disposal instructions. A new infection may need a different diagnosis or treatment.

For a regularly scheduled regimen, take the missed dose when remembered unless it is almost time for the next dose. Skip the missed dose if the next dose is due soon, and do not take two doses together. If the prescribed treatment is a single-dose regimen, ask the prescriber or pharmacist how to proceed rather than taking it at an unscheduled time.

This product contains tinidazole, supplied as a 500 mg oral tablet. Brand-name products may also use tinidazole as their active ingredient, but the package manufacturer, tablet appearance, and inactive ingredients can differ. Check the active ingredient, strength, and dosage form when comparing products.

Read the medicine label and confirm that it states "tinidazole," "500 mg," and oral tablets. Also compare the dosage form, manufacturer name, lot number, and expiration date with the package information. Do not use the tablets until a discrepancy in the ingredient, strength, or dosage form has been clarified.

Store the tablets at 77°F; brief temperature excursions from 59°F to 86°F are permitted. Protect them from light and keep them in a tightly closed container. Keep the medicine out of reach of children and avoid leaving it in a humid bathroom or hot car.

Tinidazole is a nitroimidazole antibiotic and antiprotozoal medicine used for certain infections caused by susceptible organisms. Established uses include trichomoniasis, giardiasis, intestinal amebiasis, amebic liver abscess, and bacterial vaginosis. It does not treat every intestinal, vaginal, or sexually transmitted infection.

Tinidazole is contraindicated during the first trimester of pregnancy. Later in pregnancy, it should be used only when a clinician determines that the expected benefit outweighs the potential risk. Tinidazole passes into breast milk, so breastfeeding should be interrupted during treatment and for 3 days after the last dose.

Tinidazole 500 mg tablets are taken by mouth, with the dose and treatment duration determined by the infection being treated. They may be taken with food; food can help reduce stomach upset. Take the medicine exactly as directed, because some infections use a single dose while others require treatment over several days.

Common side effects include nausea, stomach discomfort, a metallic or bitter taste, decreased appetite, headache, tiredness, dizziness, and constipation. Stop using it and seek prompt medical care for signs of a serious allergic reaction, seizures, severe numbness or tingling, confusion, or other significant neurologic symptoms. Avoid driving if dizziness or other neurologic effects occur.

Description

Note: Images in the description are provided for informational purposes and may differ from the actual appearance of the product. Please refer to the product name, strength, ingredients, and dosage form.

Fasigyn (tinidazole) is a nitroimidazole antimicrobial used to treat certain protozoal infections and bacterial vaginosis. In the U.S., tinidazole is indicated for trichomoniasis, giardiasis (age 3 and older), amebiasis (age 3 and older), and bacterial vaginosis in non-pregnant adult women.

What is Fasigyn Used For?

Tinidazole should be used only for infections that are proven or strongly suspected to be caused by susceptible organisms. It's not effective against viruses (such as colds or flu), so don't use it for viral infections.

Fasigyn

If it seems suspicious that a specialist has prescribed these tablets, don't hesitate to ask questions. Also, keep in mind that this medicine is only available with a doctor's prescription.

Trichomoniasis (sexually transmitted infection)

Tinidazole is indicated for the treatment of trichomoniasis caused by Trichomonas vaginalis. Because trichomoniasis is a sexually transmitted disease, sexual partners should be treated with the same dose and at the same time to prevent re-infection.

Bacterial vaginosis (BV)

Tinidazole is indicated for the treatment of bacterial vaginosis in non-pregnant adult women.

Infections caused by organisms called protozoa

Tinidazole is indicated for giardiasis caused by Giardia duodenalis and for intestinal amebiasis and amebic liver abscess caused by Entamoeba histolytica (in adults and in children age 3 and older).

Infection associated with stomach ulcers in combination with other drugs

Tinidazole may be used off-label as part of some Helicobacter pylori eradication regimens in combination with other medicines. Use only if prescribed by a clinician for this purpose.

In all uses, the active ingredient is tinidazole, so you may see this name often when looking for information on Fasigyn tablets.

How to take Fasigyn Tablets

Take tinidazole with food to help reduce stomach upset. Swallow tablets with water (about 100 mL / about 3.4 fl oz). If you have trouble swallowing, ask your pharmacist or doctor for advice (tablets may be crushed and mixed with syrup only if directed by a healthcare professional).

Here are some dos and don'ts when it comes to taking Fasigyn.

Dos:

  • If you become pregnant during the course, notify your doctor as soon as possible;
  • If you get white spots in your mouth and on your tongue while or soon after finishing the course, contact your doctor or pharmacist;
  • If you get itching or burning on your genitals and/or white discharge while or soon after finishing the tablets, notify your doctor. Tinidazole may contribute to yeast overgrowth;
  • If you're about to start taking other medications during the course, consult your doctor beforehand;
  • Notify all medical specialists that treat you about the fact you're taking tinidazole.

Don'ts

  • Don't give your tablets to anyone else, even if they have similar symptoms or the same condition;
  • Don't try to acquire prescription medicines without a prescription to treat any conditions.

If you miss a dose:

  • Take a dose as soon as you remember, unless it is almost time for your next dose;
  • Do not take more than prescribed to make up for a missed dose.

If you overdose:

  • Call 911 for emergencies, or contact your doctor and/or Poison Control (U.S.: 1-800-222-1222).

Side Effects of Fasigyn

If you have any discomfort during the course, even if the symptoms aren't on the list, check with your doctor. Some reactions may be individual.

The most common adverse reactions reported with a single 2 g dose include metallic/bitter taste, nausea, weakness/fatigue/malaise, stomach upset (dyspepsia/cramps/epigastric discomfort), vomiting, anorexia, headache, dizziness, and constipation.

Skin rash or itching

If you develop a severe rash, swelling, trouble breathing, or other signs of a serious allergic reaction, stop the medicine and seek medical help right away.

Fasigyn Dose

Follow your doctor's prescription exactly. The dose depends on the condition being treated.

  • Trichomoniasis (adults): 2 g by mouth as a single dose with food. Treat sexual partners with the same dose at the same time.
  • Giardiasis: Adults: 2 g by mouth as a single dose with food. Children (age 3 and older): 50 mg/kg as a single dose (max 2 g) with food.
  • Amebiasis (intestinal): Adults: 2 g per day for 3 days with food. Children (age 3 and older): 50 mg/kg/day (max 2 g/day) for 3 days with food.
  • Amebic liver abscess: Adults: 2 g per day for 3-5 days with food. Children (age 3 and older): 50 mg/kg/day (max 2 g/day) for 3-5 days with food.
  • Bacterial vaginosis (non-pregnant adult women): 2 g once daily for 2 days with food, or 1 g once daily for 5 days with food.

Contraindications and Precautions

Do not take tinidazole if you have had a hypersensitivity/allergic reaction to tinidazole or other nitroimidazole derivatives.

  • Pregnancy: Do not use tinidazole during the first trimester of pregnancy. If you are pregnant (especially in the 2nd/3rd trimester) or planning pregnancy, discuss risks and benefits with your doctor.
  • Breast-feeding: Breastfeeding should be interrupted during tinidazole therapy and for 3 days following the last dose.

Stop tinidazole and contact a clinician promptly if abnormal neurologic signs develop (e.g., numbness/tingling, seizures).

Interaction With Other Medicinal Products and Forms of Interaction

Tell your doctor about all medicines and supplements you take.

Alcohol

Avoid alcoholic beverages and products containing ethanol or propylene glycol during tinidazole therapy and for 3 days after the last dose because a disulfiram-like reaction (flushing, abdominal cramps, nausea, vomiting, headache) may occur. Do not take tinidazole if you have taken disulfiram within the last 2 weeks.

Don't drink alcohol-containing medicine (like some cough syrups) either.

Anticoagulants

Tinidazole may enhance the effect of warfarin and other coumarin anticoagulants, resulting in a prolongation of prothrombin time/INR. The anticoagulant dose may need adjustment during tinidazole co-administration and for up to 8 days after discontinuation.

Effects on ability to drive and use machines

Tinidazole may cause dizziness or other neurologic side effects in some people. If you feel dizzy or unwell, avoid driving or operating machinery.

How to Store Fasigyn Tablets

  • Store at controlled room temperature 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F).
  • Protect from light and keep in the original packaging.
  • Keep out of reach of children and pets.

Don't dispose of the drug by flushing it down the toilet. Ask a pharmacist about proper disposal.

Medically reviewed by
Brian Holtry
MD, infectious diseases specialist and medical writer
Updated August 11, 2026

Customer questions

Asked by Maria, San Antonio, United States

I previously used Tindamax in the United States. Can I switch to these tablets for my next treatment?

Answered by Support team

A replacement should be considered only if the labels match for active ingredient, strength, and dosage form. Compare Tindamax with this product for tinidazole 500 mg oral tablets; the manufacturer, tablet appearance, packaging, and inactive ingredients may differ.

Asked by Angela A, Detroit, United States

Will the package include instructions in English?

Answered by Support team

The leaflet language for the specific package is not confirmed in advance. Check the received package for its instructions, and use the labeled active ingredient, strength, and dosage form to locate reliable US prescribing information if needed.

Asked by Angela, Columbus, United States

When my order arrives, where should I look for the lot number and expiration date?

Answered by Support team

Look on the outer carton, bottle label, or blister packaging, where the lot number and expiration date are commonly printed. Keep those details with the package, and do not use the tablets if the date or lot information is missing or unreadable.

Asked by Jordan, Charlotte, United States

I have a family celebration this weekend. Can I have a glass of wine while I am taking tinidazole?

Answered by Support team
Medical reviewed by Brian Holtry

No. Avoid alcohol during tinidazole treatment and for 3 days after the last dose because the combination can cause flushing, nausea, vomiting, stomach cramps, headache, and a rapid heartbeat.

Product specifications

Active ingredientTinidazole
Drug classNitroimidazole antibiotic and antiprotozoal
Dosage formTablet
Available strengths500 mg
RouteOral
StorageStore at 77°F; excursions permitted to 59°F to 86°F. Protect from light and keep in a tightly closed container.
ATC codeP01AB02

Regulatory information

Approval StatusTinidazole is officially approved by the FDA for human medical use in the United States.
Prescription RequirementTinidazole tablets are available by prescription only and require authorization from a licensed healthcare provider.

More information