Tinidazole

Tinidazole
4.34 ratingsReviews
Generic:
Tinidazole
Indications:
infection of the intestines or vagina sexually transmitted infections
Analogs:
Fasigyn Tindamax Metronidazole Secnidazole Ornidazole Nitazoxanide Clindamycin Paromomycin Flagyl
Fasigyn is often the name Canadian customers recognise more quickly than Tinidazole. Both are based on tinidazole and are taken in a similar way. Order online today.
In stock: 18 packs
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Tinidazole 500 mg

Quantity Price per tablet You save Total price
60 C$2.47 - C$148.40
90 C$2.33 C$12.60 C$210.00
120 C$2.26 C$25.20 C$271.60
180 C$2.22 C$46.20 C$399.00
270 C$2.17 C$82.60 C$585.20
360 C$2.15 C$116.20 C$774.20

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 (approximately 24x11x0.7 cm), with no indication of what is inside.

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Shipping Times
Shipping MethodEstimated delivery
Express Free for orders over C$420.00Estimated delivery to Canada: 4-7 days
Standard Free for orders over C$280.00Estimated delivery to Canada: 14-21 days
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Discount Coupons

  • Victoria Day - May 18, 2026 8% VICTORIA8
  • Canada Day - July 1, 2026 10% CANADADAY10
  • Labour Day - September 7, 2026 6% LABOUR6
  • Thanksgiving (Canada) - October 12, 2026 9% THANKS9
  • Boxing Day - December 26, 2026 12% BOXING12

FAQ

A prescription is required to obtain tinidazole from local pharmacies in Canada. Our store policy allows you to order these tinidazole 500 mg tablets without a prescription and have them sent by mail.

Do not increase the dose or add other anti-infectives on your own. Persistent, worsening, or recurrent symptoms need reassessment because the cause may not be susceptible to tinidazole, or a different condition or treatment may be involved.

No. Do not extend a tinidazole course without a prescriber's direction. The appropriate duration depends on the infection being treated, and ongoing symptoms should be assessed rather than treated with extra tablets.

They may differ. The exact inactive ingredients for the supplied product are not confirmed in our listing, so check the package label or enclosed product information after receipt, especially if you have an allergy or intolerance to a dye, coating ingredient, lactose, or another excipient.

A different appearance can occur when the manufacturer or packaging changes and does not by itself mean the medicine is incorrect. Before use, compare the active ingredient, 500 mg strength, tablet dosage form, manufacturer, package label, lot number, expiry date, and any tablet imprint; do not take the tablets if any identifier conflicts or the product appears damaged.

Store the tablets at 25°C, with permitted temperature excursions from 15°C to 30°C. Protect them from light and keep them in a tightly closed container.

Tinidazole is a nitroimidazole antibiotic and antiprotozoal medicine used for certain susceptible infections, including trichomoniasis, giardiasis, intestinal amebiasis, and amebic liver abscess. It may also be used for some anaerobic or vaginal infections, including bacterial vaginosis, when appropriate for the diagnosed infection.

Tinidazole should not be used during the first trimester of pregnancy. Later in pregnancy, use requires an individual prescriber assessment of benefit and risk. Tinidazole passes into breast milk, so breastfeeding should be interrupted during treatment and for 72 hours after the last dose.

Tinidazole 500 mg tablets are taken by mouth, using the dose and duration selected for the particular infection. They may be taken with food if stomach upset occurs. Avoid alcohol during treatment and for 72 hours after the final dose because the combination can cause flushing, nausea, vomiting, cramps, or headache.

Common effects include nausea, stomach discomfort, a metallic or bitter taste, reduced appetite, headache, dizziness, and tiredness. Seek prompt medical attention for an allergic reaction, severe rash, numbness or tingling, unsteadiness, confusion, seizures, or severe persistent diarrhoea.

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 Canada, tinidazole is used in clinical practice for infections such as trichomoniasis, giardiasis, amebiasis, and bacterial vaginosis, depending on the prescribing context and patient factors.

What is Fasigyn used for?

Tinidazole has been used in Canada since 1987.

Tinidazole should only be used for infections that are proven or strongly suspected to be caused by susceptible organisms. It does not work against viruses such as colds or the flu, so it should not be used for viral infections.

Fasigyn

If it seems unusual that a specialist in Canada has prescribed these tablets, don't hesitate to ask questions. Also keep in mind that in Canada, 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 infection, sexual partners should be treated with the same dose at the same time to help 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 medications. Use it only if a clinician has prescribed it for this purpose.

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

How to take Fasigyn tablets

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

Here are some do's and don'ts for taking Fasigyn.

Do's:

  • If you become pregnant during the course, tell your doctor as soon as possible;
  • If you get white spots in your mouth or on your tongue while taking the tablets or soon after finishing the course, contact your doctor or pharmacist;
  • If you get itching or burning in the genital area and/or white discharge while taking the tablets or soon after finishing them, tell your doctor. Tinidazole may contribute to yeast overgrowth;
  • If you are about to start taking other medications during the course, check with your doctor first;
  • Tell any healthcare professional treating you that you are 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 get prescription medications without a prescription to treat any condition.

If you miss a dose:

  • Take it 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 in an emergency, or contact your doctor and/or your local Poison Centre. In most parts of Canada, the poison number is 1-844-POISON-X (1-844-764-7669); in Québec, call 1-800-463-5060.

Side effects of Fasigyn

If you have any discomfort while taking this medicine, even if it is not listed here, check with your doctor. Some reactions can vary from person to person.

The most common side effects reported with a single 2 g dose include a metallic or bitter taste, nausea, weakness, fatigue or malaise, stomach upset (dyspepsia, cramps, or epigastric discomfort), vomiting, loss of appetite, 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 taking the medicine and get 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 or 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 or 3rd trimester, or planning a pregnancy, discuss the risks and benefits with your doctor.
  • Breast-feeding: Breastfeeding should be interrupted during tinidazole treatment and for 3 days after the last dose.

Stop taking tinidazole and contact a clinician promptly if you develop unusual neurologic signs such as numbness, tingling, or seizures.

Interaction with other medications and other forms of interaction

Tell your doctor about all medications and supplements you take.

Alcohol

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

Do not take medications that contain alcohol either, such as some cough syrups.

Anticoagulants

Tinidazole may increase the effect of warfarin and other coumarin anticoagulants, which can prolong prothrombin time/INR. The anticoagulant dose may need to be adjusted while taking tinidazole together and for up to 8 days after stopping it.

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 it in the original packaging.
  • Keep out of reach of children and pets.

Do not dispose of the medication 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 Leah, Saskatoon, Canada

I'm in Saskatoon, and my tinidazole parcel arrived after several very cold days. What should I check before I start the tablets?

Answered by Support team

Check that the outer package and container are intact, dry, and properly labelled, and that the tablets are not cracked, wet, discoloured, or otherwise unusual. The labelled storage range is 15°C to 30°C.

Asked by Grace L, Yellowknife, Canada

I live in Yellowknife and travel out of town for pharmacy errands. How can I find out whether you can ship tinidazole to my address before I order?

Answered by Support team

Enter your complete Yellowknife address and postal code at checkout. The shipping options shown there will confirm whether the order can be sent to your address before payment.

Asked by Julien W, Vancouver, Canada

I'm ordering from Vancouver. Can I use my postal code to check shipping availability before I pay?

Answered by Support team

Yes. Enter your postal code and delivery address at checkout to see the available shipping options before completing payment. Availability is determined for the address entered.

Asked by Gabriel H, St. Johns, Canada

I finished taking disulfiram about 10 days ago and have now been prescribed tinidazole. Is that combination a concern?

Answered by Support team
Medical reviewed by Brian Holtry

Yes. Tinidazole should not be taken during disulfiram treatment or within 2 weeks of stopping it because the combination can cause confusion or psychotic reactions. Contact the prescriber or pharmacist before starting tinidazole so the treatment timing can be reviewed.

Product specifications

Active ingredientTinidazole
Drug classNitroimidazole antibiotic and antiprotozoal
Dosage formTablet
Available strengths500 mg
RouteOral
StorageStore at 25°C; excursions permitted from 15°C to 30°C. Protect from light and keep in a tightly closed container.
ATC codeP01AB02

Regulatory information

Authorization StatusTinidazole is not authorized for human medicinal use in Canada.

More information