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
In the UK, Tinidazole is commonly recognised as Fasigyn. Both are based on tinidazole and are used for similar purposes. You can place an order and buy Tinidazole online today at the lowest prices.
In stock: 18 packs
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Tinidazole 500 mg

Quantity Price per tablet You save Total price
60 £1.31 - £78.52
90 £1.23 £6.67 £111.12
120 £1.20 £13.33 £143.72
180 £1.17 £24.45 £211.13
270 £1.15 £43.71 £309.65
360 £1.14 £61.49 £409.66

Manufacturers

Mission Pharmacal CompanyPfizerPfizer Limited

Payment & Delivery

Package Example

Your order is carefully packed and is dispatched 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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Delivery Times
Delivery MethodEstimated delivery
Express Free for orders over £222.24Estimated delivery to the UK: 4-7 days
Standard Free for orders over £148.16Estimated delivery to the UK: 14-21 days
EMSRoyal Mail
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Discount Coupons

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Brand Names

Also known as (by country):
CountryBrand Names
United Kingdom
Fasigyn

FAQ

Tinidazole is a prescription-only medicine in the United Kingdom, so a prescription is required when buying it from a local pharmacy. Our store policy allows customers to order it without a prescription and have it sent by mail.

Take the missed dose when remembered unless it is nearly time for the next dose. In that case, skip the missed dose and continue the prescribed schedule; do not take a double dose. Some tinidazole treatments are single-dose regimens, so follow the directions supplied for the particular infection.

Take tinidazole for the full prescribed regimen, even if symptoms improve sooner, unless the prescriber advises otherwise. Depending on the infection, treatment may be a single dose or a short course; do not stop early or add extra doses independently.

The manufacturer of the supplied product may vary. The manufacturer's name is shown on the product packaging.

Do not take the tablets if the labelled strength is not 500 mg or does not match the order. Keep the packaging and compare the active ingredient, strength, dosage form, manufacturer, batch number and expiry date before requesting the discrepancy to be checked.

Store the tablets at 25°C; temporary excursions from 15°C to 30°C are permitted. Protect them from light and keep them in a tightly closed container. Keep the tablets in their labelled packaging where possible so the medicine and expiry details remain identifiable.

Tinidazole is a nitroimidazole antibiotic and antiprotozoal medicine used for susceptible infections, including trichomoniasis, giardiasis and amoebiasis. It may also be used for certain anaerobic bacterial infections, including some intestinal or vaginal infections. The appropriate regimen depends on the infection being treated.

Tinidazole should be avoided during pregnancy. It is contraindicated during the first trimester and may be considered later only when the expected benefit outweighs the potential risk. It passes into breast milk, so breastfeeding should be avoided during treatment and for 3 days after the final dose.

Tinidazole 500 mg tablets are taken by mouth exactly as prescribed. They may be taken with food to reduce stomach upset; food can delay absorption slightly but does not reduce overall absorption. Avoid alcohol during treatment and for 72 hours after the final dose because it can cause flushing, nausea, vomiting, headache and cramps.

Common effects include nausea, stomach discomfort, vomiting, a metallic or bitter taste, reduced appetite, headache, tiredness and dizziness. Stop taking it and seek urgent medical advice for signs of a serious allergic reaction, seizures, severe dizziness or confusion, numbness or tingling, or a severe skin reaction.

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, active ingredients, and pharmaceutical form.

Fasigyn (tinidazole) is a nitroimidazole antimicrobial used to treat certain protozoal infections and bacterial vaginosis. In the UK, tinidazole is used for trichomoniasis, giardiasis, amoebiasis and bacterial vaginosis, in line with local prescribing guidance.

What is Fasigyn used for?

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 flu, so do not use it for viral infections.

Fasigyn

If you are unsure why a specialist has prescribed these tablets, do not hesitate to ask. Also, keep in mind that in the United Kingdom, this medicine is only available on prescription.

Trichomoniasis (sexually transmitted infection)

Tinidazole is used to treat 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 used to treat bacterial vaginosis in non-pregnant adult women.

Infections caused by organisms called protozoa

Tinidazole is used for giardiasis caused by Giardia duodenalis, and for intestinal amoebiasis and amoebic liver abscess caused by Entamoeba histolytica (in adults and in children aged 3 and over).

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. Only use it for this purpose if it has been prescribed by a clinician.

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). If you have trouble swallowing, ask your pharmacist or doctor for advice. Tablets may only be crushed and mixed with syrup if a healthcare professional has told you to do this.

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

Dos:

  • If you become pregnant during the course, tell your doctor as soon as possible;
  • If you get white patches in your mouth or on your tongue during treatment, or soon after finishing the course, contact your doctor or pharmacist;
  • If you get itching or burning around your genitals and/or white discharge during treatment, or soon after finishing the tablets, tell your doctor. Tinidazole may contribute to yeast overgrowth;
  • If you are about to start taking other medicines during the course, check with your doctor first;
  • Tell any healthcare professional treating you that you are taking tinidazole.

Don'ts

  • Do not give your tablets to anyone else, even if they have similar symptoms or the same condition;
  • Do not try to get prescription medicines without a prescription to treat any condition.

If you miss a dose:

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

If you overdose:

  • For emergencies, call 999, or contact your doctor and/or NHS 111.

Side effects of Fasigyn

If you feel unwell during the course, even if your symptoms are 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, tiredness or generally feeling unwell, stomach upset (dyspepsia, cramps or upper abdominal 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 straight away.

Fasigyn dose

Follow your doctor's instructions 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 (aged 3 and over): 50 mg/kg as a single dose (max 2 g) with food.
  • Amoebiasis (intestinal): Adults: 2 g/day for 3 days with food. Children (aged 3 and over): 50 mg/kg/day (max 2 g/day) for 3 days with food.
  • Amoebic liver abscess: Adults: 2 g/day for 3-5 days with food. Children (aged 3 and over): 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 treatment with tinidazole and for 3 days after the last dose.

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

Interaction with other medicines and other forms of interaction

Tell your doctor about all medicines and supplements you take.

Alcohol

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

Do not take medicines containing 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 during treatment with tinidazole and for up to 8 days after stopping it.

Effects on ability to drive and use machines

Tinidazole may cause dizziness or other neurological side effects in some people. If you feel dizzy or unwell, avoid driving or using 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 the reach of children and pets.

Do not dispose of the medicine by flushing it down the toilet. Ask a pharmacist how to dispose of it properly.

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

Customer questions

Asked by Daniel R, Stoke-on-Trent, United Kingdom

I'm in Stoke-on-Trent and my tinidazole order now says dispatched. Does that mean it should arrive tomorrow?

Answered by Support team

Dispatch means that the order has left us, not that it is due for delivery the next day. Express delivery typically takes 4-7 days and includes tracking, while standard delivery typically takes 14-21 days.

Asked by Holly B, Newry, United Kingdom

I live in Newry, Northern Ireland. Can I check whether tinidazole can be delivered to my postcode before I pay?

Answered by Support team

Yes. Enter your Newry delivery address and postcode at checkout to see the delivery options available for the order. Availability is confirmed from the options shown there.

Asked by Layla B, Sheffield, United Kingdom

I have previously been given Fasigyn. Will this order show that brand name on the pack, or could it have a different name?

Answered by Support team

We cannot guarantee that a particular brand name will appear on the supplied pack. Before taking the tablets, check that the label states tinidazole, 500 mg, and oral tablets, as well as the listed manufacturer and expiry date.

Asked by Sophie, Coventry, United Kingdom

I had a widespread rash after metronidazole a few years ago. Is tinidazole likely to be suitable for me instead?

Answered by Support team
Medical reviewed by Donna Brettler

Tinidazole is related to metronidazole, and a previous allergic reaction to a nitroimidazole can be relevant because cross-reactivity may occur. Do not start tinidazole until the clinician who prescribed treatment has assessed the previous reaction and advised on a suitable option.

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

Marketing authorisationTinidazole is not authorised for human medicinal use in the United Kingdom.

More information