Patient info Open main menu

Canesten Thrush pessary 500 mg pessary – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Pharmacy medicine (P) Details

Medicine strength:
500 mg
Contains active substance:

Patient leaflet - Canesten Thrush pessary 500 mg pessary

1. What is Canesten Thrush Pessary and what is it used for?

Canesten Thrush Pessary is a single application for the treatment of vaginal thrush. It is inserted into the vagina for treatment at the site of infection.

Only use this product if you have been previously diagnosed by your doctor as having vaginal thrush.

The active substance in Canesten Thrush Pessary is clotrimazole. Clotrimazole belongs to a group of medicines called azoles and is an antifungal agent which fights the cause of infections such as vaginal thrush.

2. Before you use Canesten Thrush Pessary

Do not use Canesten Thrush Pessary:

  • If you are allergic (hypersensitive) to clotrimazole or any of the other

    ingredients of Canesten Thrush Pessary (see Section 6. Further Information).

  • During your period as it may be less effective.

Before using Canesten Thrush Pessary, you should see your doctor if:

  • You are unsure whether you have thrush or this is the first time you have had these symptoms.
  • You have had more than two infections of thrush in the last six

    months.

  • You or your partner have ever had a sexually transmitted disease.
  • You are aged under 16 or over 60.
  • You have ever had an allergic reaction to Canesten or any other

    vaginal antifungal products.

  • You have any of the following symptoms:

    • Irregular vaginal bleeding.
    • Abnormal vaginal bleeding or a blood-stained discharge.
    • Ulcers, blisters or sores of the vagina or vulva.
    • Lower abdominal pain.
    • Pain or difficulty in passing urine. • Fever or chills.
    • Feeling sick or vomiting.
    • Diarrhoea.
    • A foul smelling discharge from the vagina.

This is because Canesten Thrush Pessary may not be the right treatment for you.

Special precautions:

As with other pessaries, this product may reduce the effectiveness of rubber contraceptives, such as condoms or diaphragms. Consequently, you should use alternative precautions for at least five days after using this product.

Do not use tampons, intravaginal douches, spermicides or other vaginal products while using this product.

Avoid vaginal intercourse while you have thrush and during use of this product because your partner could become infected.

Using other medicines:

Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, including medicines obtained without a prescription.

Inform your doctor if you are taking tacrolimus or sirolimus (used to reduce the immune response to prevent rejection after an organ transplant).

Pregnancy and breastfeeding:

Canesten Thrush Pessary can be used in pregnancy and breastfeeding.

If you are pregnant or trying for a baby, tell your doctor or midwife before using Canesten Thrush Pessary. If you have informed your doctor or midwife, follow his/her instructions carefully. To treat internal thrush, your doctor may recommend that you use the pessary without the help of an applicator.

3. How to use Canesten Thrush Pessary

If Canesten Thrush Pessary has been prescribed for you by your doctor, follow any instructions he/she may have given you.

If you purchased this product without a prescription, follow these directions closely:

The applicator should be used to insert the pessary as high as possible into the vagina, preferably before going to sleep at night for convenient and comfortable treatment.

Wash your hands before handling the applicator and the foil blister pack and again afterwards when you have used the applicator.

  1. 1.

    Image 1 shows all the components included in the Canesten Thrush 500mg Pessary pack.

    Remove the applicator from the packaging and pull out the plunger (with the red lock attached) from the applicator.

  2. 2. Remove the pessary from the foil blister pack and place into the open end of the applicator with the curved edge of the pessary facing down. Push the plunger and lock into the applicator until you feel a click.
  3. 3. Once you have felt the click, remove the lock from the plunger.
  4. 4. Carefully insert the applicator as deep as is comfortable into the vagina (this is easiest when lying on your back with your knees bent up) up to the patterned grip zone. Hold the applicator at the patterned grip zone. Carefully push the plunger all the way until it stops to dispense the vaginal pessary.
  5. 5. Remove the applicator. Dispose of the applicator in a safe place, out of the reach of children.

The applicator cannot be flushed down the toilet.

As the pessary dissolves in the vagina, it may be helpful to wear a panty liner.

It may leave a white chalky residue after using the pessary, which does not mean that the treatment has not worked.

However, if you notice pieces of undissolved pessary, speak to your doctor or a pharmacist, as the treatment may not have worked properly.

The symptoms of thrush should disappear within three days of treatment.

  • If no improvement is seen after seven days you must tell your doctor.
  • If the infection returns after seven days you may use one further treatment.
  • If you have more than two infections within six months you should see your doctor.

603-9846 L-01-2667-01 Canesten Thrush Pessary is for use in the vagina only: Do not put the pessary in your mouth or swallow it.

If the pessary is swallowed accidentally, tell your doctor straight away or contact the Accident and Emergency Department of your nearest hospital.

4. Possible side effects

Like all medicines, Canesten Thrush Pessary can cause side effects, although not everybody gets them.

As with all medicines, some people may be allergic to the pessary. If you are allergic, a reaction will occur soon after you have used the medicine. If you experience an allergic reaction or the redness, burning, pain, itching or swelling get worse, stop using this product and tell your doctor straight away or contact the Accident and Emergency Department of your nearest hospital. Signs of an allergic reaction may include:

  • Rash.
  • Swallowing or breathing problems.
  • Swelling of your lips, face, throat or tongue.
  • Weakness, feeling dizzy or faint.
  • Nausea.

After you use Canesten Thrush Pessary you might experience:

  • Itching, rash, swelling, redness, discomfort, burning, irritation, vaginal

    peeling, discharge or bleeding.

  • Pain (eg. abdominal pain, vulvovaginal pain).
  • Nausea.

If you experience any of the above effects, tell your doctor or pharmacist immediately.

Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

By reporting side effects, you can help provide more information on the safety of this medicine.

5. How to store Canesten Thrush Pessary Keep out of the sight and reach of children.

Do not store above 25°C.

Do not use after the expiry date which is stated on the carton and blister label. The expiry date refers to the last day of that month. If your medicine shows any signs of discolouration or deterioration consult your pharmacist for advice. If damaged, please tell your doctor or pharmacist.

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help to protect the environment.

6. Further information

What Canesten Thrush Pessary contains:

  • The active substance is clotrimazole at a strength of 500mg.
  • The other ingredients are lactose monohydrate, microcrystalline

    cellulose, lactic acid, maize starch, crospovidone, calcium lactate pentahydrate, magnesium stearate, colloidal anhydrous silica and hypromellose.

What Canesten Thrush Pessary looks like and contents of the pack:

Canesten Thrush Pessary contains a single white pessary held inside a foil blister pack and one applicator for insertion of the pessary into the vagina.

Canesten is a registered trademark.

Manufactured by: GP GRENZACH PRODUKTIONS GMBH, GRENZACH-WYHLEN, GERMANY. Procured from within the EU. Product Licence Holder: Quadrant Pharmaceuticals Limited, Lynstock House, Lynstock Way, Lostock, Bolton, BL6 4SA. Repackaged by: Maxearn Limited, Unit 29, Oakhill Trading Estate, Devonshire Road, Worsley, Manchester, M28 3PT.

PL 20774/2667 – Canesten Thrush Pessary 500mg pessary

This leaflet was revised on 27th January 2025

Remember: If you have any doubts about using Canesten Thrush Pessary correctly, seek the advice of your doctor or pharmacist.

Further information about vaginal thrush:

Vaginal thrush (candidiasis) is a common infection that most women suffer from at some time in their lives and is not caused by lack of personal hygiene.

Thrush is caused by a yeast (fungus) called Candida which lives harmlessly in the vagina and other parts of the body, without you even noticing it. However, the natural balance that keeps Candida under control can be upset by many factors such as hormonal changes (menstruation, contraceptive pill, pregnancy, menopause), poor health, antibiotics, perfumed soaps, bath additives and tight clothing.

If the natural pH balance is altered, the level of yeast increases and can develop into a thrush infection causing any of the following symptoms: persistent burning and/or itching around the vagina and vulva, redness, swelling and soreness of the tissues of the vagina and vulva and a whitish, odourless discharge from the vagina. Not everybody who has thrush has all these symptoms; you may have only one of them.

How to avoid future recurrences:

  • Wear cotton knickers and loose clothing.
  • Wash daily.
  • After going to the toilet, wipe yourself from the front to back as a thrush infection may be transferred from the bowel. ✓ Change your sanitary protection regularly.

✗ Try to avoid wearing tights, nylon knickers and close fitting jeans. ✗ Try to avoid washing with perfumed soaps or using vaginal deodorants.

✗ Do not wash or rub yourself hard with sponges or flannels and avoid hot baths with strong perfumed oils.

If you are still worried or have any questions about the symptoms or the treatment of thrush, do not hesitate to ask your doctor or pharmacist for advice.

For UK residents only: if you have any questions or would like more information, call our Canesten Advice Line on 0845 758 5030. Calls charged at local rate.

Blind or partially sighted?

Is this leaflet hard to see or read? Contact Quadrant Pharmaceuticals Ltd, Tel: 01204 471 269

603-9846 L-01-2667-01 P

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PLPI 20774/2667

Last revision stated in the text: 27 January 2025 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Canesten Thrush pessary 500 mg pessary

Prescription needed? No, but it is sold only in pharmacies (P)
Active substance Clotrimazole
Strength 500 mg
Pharmaceutical form Pessary
How is it taken Vaginal
Excipients Lactose monohydrate, Microcrystalline cellulose, Lactic acid, Maize starch, Crospovidone, Calcium lactate pentahydrate, Magnesium stearate, Silica, colloidal anhydrous, Hypromellose
Pack sizes 1 pessary
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 48 months.
Storage Do not store above 25°C.
Drug group (ATC) Gynaecological antiinfectives and antiseptics – imidazole derivatives
  1. G Genito urinary system and sex hormones
    1. G01 Gynecological antiinfectives and antiseptics
      1. G01A Antiinfectives and antiseptics, excl. combinations with corticosteroids
        1. G01AF Imidazole derivatives, gyncological antiinfectives
          1. G01AF02 clotrimazole
Marketing authorisation PL 00010/0083 (first authorised 4 January 1982), PLPI 20774/2667
Marketing authorisation holder Bayer plc
Codes GTIN 5010605054112 · BNF 07020200

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.1.0 of 12 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.