Canesten Thrush Oral Capsule 150mg capsule

Patient Leaflet Updated 24-Apr-2024 | Bayer plc

Canesten Thrush Oral Capsule 150mg capsule


Canesten® Thrush Oral Capsule

150mg capsule


Read all of this leaflet carefully because it contains important information for you.

This medicine is available without prescription. However, you still need to use Canesten Thrush Oral Capsule carefully to get the best results from it.

  • Keep this leaflet. You may need to read it again.
  • Ask your pharmacist if you need more information or advice.
  • You must contact a doctor if your symptoms worsen or do not improve in 7 days.
  • If you have any unusual effects after using this product, tell your doctor or pharmacist.


1. What is Canesten Thrush Oral Capsule and what is it used for?
2. Before you use Canesten Thrush Oral Capsule
3. How to use Canesten Thrush Oral Capsule
4. Possible side effects
5. How to store Canesten Thrush Oral Capsule
6. Further information


Canesten Thrush Oral Capsule is a full course of treatment for thrush.

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

The active substance in Canesten Thrush Oral Capsule is fluconazole. Fluconazole belongs to a group of medicines called azoles and is an antifungal agent which fights the cause of infections such as thrush.

Do not use Canesten® Thrush Oral Capsule:
  • If you are allergic (hypersensitive) to fluconazole, to other medicines you have taken to treat fungal infections or to any of the other ingredients of Canesten Thrush Oral Capsule (see Section 6. Further Information).
  • If you are taking astemizole or terfenadine (antihistamine medicines for allergies), cisapride (used for stomach upsets), pimozide (used for treating mental problems), quinidine (used for treating heart arrhythmia), erythromycin (an antibiotic for treating infections).


If you have any of the following symptoms do not use Canesten Thrush Oral Capsule and see your doctor as soon as possible:

  • 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 Oral Capsule may not be the right treatment for you.


Do not use Canesten Thrush Oral Capsule without talking to your doctor first if:

  • Your sexual partner does not have thrush.
  • You have sores, ulcers or blisters on your penis.
  • You have an abnormal discharge from your penis.
  • Your penis has started to smell.
  • You have pain or difficulty in passing urine.

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

Before using Canesten® Thrush Oral Capsule, 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 fluconazole or any other vaginal antifungal products.
  • You have ever developed a severe skin rash or skin peeling, blistering and/or mouth sores after taking Canesten Thrush Oral Capsule.

Serious skin reactions including drug reaction with eosinophilia and systemic symptoms (DRESS) have been reported in association with Canesten Thrush Oral Capsules treatment. Stop using Canesten Thrush Oral Capsule and seek medical attention immediately if you notice any of the symptoms related to these serious skin reactions described in section 4.

  • You have had any disease or illness affecting the liver or kidneys, or have had any unexplained jaundice.
  • You have heart problems, including heart rhythm problems.
  • You suffer from any other chronic disease or illness.
  • The fungal infection does not improve, as alternative antifungal therapy may be needed.

Important information about some of the ingredients:

The capsule contains lactose monohydrate, so if you have an intolerance to some sugars contact your doctor before taking this medicinal product.

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.

Do not use Canesten Thrush Oral Capsule if you are taking astemizole, terfenadine, cisapride, pimozide, quinidine or erythromycin.

Inform your doctor if you are taking: Anticoagulants (to prevent blood clots), Sulphonylureas (to control diabetes), Hydrochlorothiazide (to treat fluid retention and high blood pressure), Benzodiazepines (tranquilisers), Phenytoin or Carbamazepine (to control epilepsy), Rifampicin or Rifabutin (antibiotics), Ciclosporin, Sirolimus, Tacrolimus or Tofacitinib (to reduce the immune response), Theophylline (to control asthma), Zidovudine or Saquinavir (to treat HIV infection), Losartan (to reduce blood pressure), Alfentanil, Fentanyl or Methadone (to treat pain), Halofantrine (for treating malaria), Amiodarone (to control irregular heartbeats, 'arrhythmias'), Amitriptyline or Nortriptyline (anti-depressants), Ivacaftor (for treating cystic fibrosis), Statins like Simvastatin, Atorvastatin or Fluvastatin (for reducing high cholesterol levels), Non-steroidal Anti-inflammatory Drugs like Ibuprofen, Celecoxib, Diclofenac, Meloxicam or Naproxen, Olaparib (to treat ovarian cancer), Ibrutinib (used for treating blood cancer), Tolvaptan (used for treating low levels of sodium in your blood).

Taking Canesten® Thrush Oral Capsule with food and drink:

Canesten Thrush Oral Capsule should be swallowed whole with a glass of water. It can be taken with or without food. There is no known interaction with alcohol or nicotine.

Pregnancy and breastfeeding:

You should not take Canesten Thrush Oral Capsule if you are pregnant, think you may be pregnant, are trying to become pregnant or breastfeeding, unless your doctor has told you so. If you are planning to become pregnant, it is recommended to wait a week after a single dose of fluconazole before becoming pregnant.

Fluconazole taken during the first or second trimester of pregnancy may increase the risk of miscarriage.

Fluconazole taken during the first trimester may increase the risk of a baby being born with birth defects affecting the heart, bones and/or muscles.

Driving and using machines:

Canesten Thrush Oral Capsule may cause dizziness.

If dizziness occurs after taking your capsule, you should not drive or use machines.


If Canesten Thrush Oral Capsule 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 full course of treatment consists of a single Canesten Thrush Oral Capsule. The capsule is to treat thrush at the site of infection and should be swallowed whole with a glass of water (with or without food).

The symptoms of thrush should disappear within two days of treatment. If no improvement is seen after seven days, you must tell your doctor. If the infection returns after seven days another capsule may be taken but if you have more than two infections within six months you should see your doctor.

If you take more Canesten® Thrush Oral Capsule than you should:

If more than one capsule is taken, tell your doctor straight away or contact the Accident and Emergency Department of your nearest hospital.


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

As with all medicines, some people may be allergic to the capsule. If you are allergic, a reaction will occur soon after you have taken it. If you experience an allergic reaction, 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.

If you experience any of the following, please contact your doctor or pharmacist immediately – you may need urgent medical attention:

  • Severe condition with blistering and peeling of the skin, mouth, eyes or genitals.
  • Widespread rash, high body temperature and enlarged lymph nodes (DRESS syndrome or drug hypersensitivity syndrome).
  • Liver disorders with symptoms such as yellowing of the skin or eyes, dark urine or pale stools.
  • Seizures
  • Change in heart rhythm or rate.

Additionally, if any of the following side effects gets serious, or if you notice any side effects not listed in this leaflet, please tell your doctor or pharmacist.

Common side effects (may affect up to 1 in 10 people) are:

  • headache
  • stomach discomfort, diarrhoea, feeling sick, vomiting
  • increases in blood tests of liver function
  • rash

Uncommon side effects (may affect up to 1 in 100 people) are:

  • reduction in red blood cells which can make skin pale and cause weakness or breathlessness
  • decreased appetite
  • inability to sleep, feeling drowsy
  • fit, dizziness, sensation of spinning, tingling, pricking or numbness, changes in sense of taste
  • constipation, indigestion, wind, dry mouth
  • muscle pain
  • wheals, blistering (hives), itching, increased sweating
  • fatigue, general feeling of being unwell, fever

Rare side effects (may affect up to 1 in 1,000 people) are:

  • lower than normal white blood cells that help defend against infections and red blood cells that help to stop bleeding, respectively causing recurrent infections like cold and flu and increased bleeding/blood thinning (if you cut yourself)
  • red or purple discoloration of the skin which may be caused by low platelet count, other blood cell changes
  • blood chemistry changes (high blood levels of cholesterol, fats)
  • low blood potassium
  • shaking
  • hair loss

Frequency not known, but may occur (cannot be estimated from the available data):

  • hypersensitivity reaction with skin rash, fever, swollen glands, increase in a type of white blood cell (eosinophilia) and inflammation of internal organs (liver, lungs, heart, kidneys and large intestine) (Drug Reaction or rash with Eosinophilia and Systemic Symptoms (DRESS)).

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: 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.


Keep this medicine out of the sight and reach of children.

Do not use Canesten Thrush Oral Capsule after the expiry date which is stated at one end of the carton and on the blister pack. The expiry date refers to the last day of that month.

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

What Canesten® Thrush Oral Capsule contains:
  • The active substance is fluconazole at a strength of 150mg.
  • The other ingredients are colloidal silicon dioxide, lactose monohydrate, magnesium stearate, maize starch and sodium lauryl sulphate. The capsule shell contains brilliant blue FCF (E133), titanium dioxide (E171) and gelatine.
    The printing ink contains shellac, black iron oxide (E172) and propylene glycol. See Section 2 ‘Important information about some of the ingredients’ for lactose monohydrate advice.

What Canesten® Thrush Oral Capsule looks like and contents of the pack:

Each pack contains a single light blue capsule with ‘Canesten®’ printed on it in black between two black lines.

Marketing Authorisation Holder:
Bayer plc
400 South Oak Way

Laboratori Fundació Dau
C/C 12-14 Polígono Industrial de la Zona Franca
08040 Barcelona

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

Further information about 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.

In men, Candida can also cause thrush - a condition called balanitis (inflammation of the end of the penis). It causes any of the following symptoms: soreness and redness of the penis, tightness of the foreskin and a white, odourless discharge from the penis.

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.

This leaflet was last revised in January 2024.

Canesten is a registered trademark of Bayer AG, Germany.


Company Contact Details
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400 South Oak Way, Reading, Berkshire, RG2 6AD


+44 (0)118 206 3000


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