Diflucan is a form of common antifungal medication that is only available via prescription. The medication contains the active ingredient fluconazole, which is a substance belonging to the triazole antifungal family. More information

A doctor will review your order and write you a prescription, if appropriate. This prescription is then forwarded to a pharmacy. The pharmacy will have your medicine delivered to you within one to three working days. Read more about this process here.

Instruction costs (includes consult & service fee)
Service – Instruction costs (includes consult & service fee)
Patient Leaflet(s)

Diflucan is a kind of anti-fungal and anti-yeast medication that contains the active ingredient fluconazole. The Fluconazole in Diflucan helps to kill infections caused by certain years and fungi. This medication is available on prescription only.  

What is Diflucan? 

Diflucan is a form of common antifungal medication that is only available via prescription. The medication contains the active ingredient fluconazole, which is a substance belonging to the triazole antifungal family. Triazole or azole antifungals kill fungus and yeast infections throughout the body by causing holes to appear in the cell walls of the fungus. This causes essential fluids and other crucial substances within the fungus to leak out.  

Diflucan is available in its generic form, or under a branded name. This medication can treat a wide variety of fungal infections, and it is available both in tablet form, and as an oral suspension liquid. This overview refers to the pill form of Diflucan.  

When is Diflucan used? 

Diflucan is used for the treatment of infections in the body caused by exposure to certain kinds of yeast and fungus. The most common yeast that Diflucan is used to treat is candidiasis. Although candidiasis can cause fungal infections throughout various parts of the body, including the lungs and the throat, it is most commonly found in cases of vaginal or oral thrush.  

Diflucan can help to eliminate a fungal or yeast infection by damaging the cell walls of the growths cause by the yeast or fungus, this causes essential liquids to leak out. Diflucan can also be used as a treatment for the prevention of recurring infections in the throat, mouth, vagina, intestines, and other internal environments.  

In some cases, Diflucan can be given as part of a combination treatment used to prevent infections for people are particularly high risk after they have had a procedure that would make their immune system weaker than normal.  

How do you use Diflucan? 

Diflucan and other generic forms of fluconazole are available in liquid suspension forms for people who might struggle to take tablets because of difficulty swallowing. However, Diflucan is usually given in tablet form, which means that it needs to be taken orally at a time and dose directed by your consultant or doctor.  

Diflucan will come with a patient leaflet that can help to guide you through the process of taking the medication. You will need to read this leaflet whenever you get a new packet of Diflucan even if you have taken the medication before, as the guidelines may have changed. Diflucan is best taken with plenty of water to help you swallow the substance.  

Diflucan can be taken with or without food depending on your preferences. Some people find that taking medications with food can help to settle their stomach. Make sure that you take the exact amount of medication that has been prescribed by your doctor. Although you may not experience the results of Diflucan straight away, you should begin to notice a change in your symptoms after seven days. If you do not see a change, then you should speak to a doctor.  

Diflucan should be taken consistently so that you can get the biggest benefit of it. Your doctor or consultant will advise you on how frequently to take this medication so that you can maintain a consistent dose in your body. Even if you begin to feel better shortly after taking Diflucan, continue taking the medication for as long as you are told to do so. Stopping medication like Diflucan ahead of schedule could lead to a higher chance that the fungus or yeast causing your original infection will return. Additionally, if you fail to complete the course, you may have a higher chance of becoming resistant to this medication.  

What dosages are there? 

Diflucan can be prescribed in a variety of different doses depending on what condition needs to be treated with this medication. If you are treating a vaginal fungal infection, the most common dose for a woman over the age of 18 is usually one 150mg capsule taken as a single dose. However, if you are taking Diflucan for an infection that is not in the vagina, your doctor or consultant may suggest a dose anywhere between 50mg and 400 mg per day.  

Children being treated with Diflucan will have a dosage suggested based on their weight, as well as a close evaluation of their medical condition. People over the age of 60 may be asked to take a lower dose of Diflucan to begin with, as the kidneys of older people may not be as effective at flushing out the fluconazole in the medication.  

Do not take any more or less of this medication than you are advised to do so by a medical professional or consultant.  

What are the side effects Diflucan? 

Medications like Diflucan can sometimes cause side effects. Although your chances of severe side effects with this substance are rare, it is important to be aware of the kind of responses that this medication can cause, in case you need to seek medical attention. The most common side effects that you may experience when taking Diflucan include: 

  • Diarrhea
  • Vomiting or Nausea; 
  • Pain or stomach upsets; 
  • Hair loss; 
  • Dizziness or trouble balancing; 
  • Headaches

If you feel that these symptoms are getting worse over time, you should speak to a doctor and consider stopping this medication. If you experience a severe reaction to this medication, then it is important to get immediate attention. For instance, Diflucan can sometimes cause the adrenal glands not to work properly. Make sure that you tell your doctor if you feel overly tired, or you have an unusual appetite or weight loss when taking Diflucan  

Seek medical attention if you have an irregular heartbeat when taking Diflucan. In some cases, this medication could cause liver disease. Keep a close eye out for signs of liver problems, including vomiting, abdominal pain, yellowing of the eyes or skin, or changes in urination.  

A severe allergic reaction to this medication is rare. However, seek help immediately if you notice an allergic response, such as a sudden fever that doesn’t go away, swelling of the tongue, lips or throat, or problems with your breathing.  

When shouldn’t you use Diflucan? 

Diflucan will not be the recommended treatment for everyone with yeast or fungal infections. It is important to complete a consultation or discuss your condition carefully with your doctor to ensure that this treatment option is right for you. You should not take Diflucan if you are allergic to it or any other form of azole based antifungal medication. Consultants should be aware of any other allergies that you may have which may cause interactions with the inactive ingredients in this medication.  

Answer the questions that your consultant asks you about your medical history carefully, particularly if you have ever had any issues with your liver or kidney. In some cases, Diflucan can cause issues with your heart rhythm and lead to a condition called QT prolongation, which can be fatal. Your risk of this condition may be higher if you are taking drugs that can cause a similar problem. Additionally, you may have a higher risk of QT prolongation if you have a history of heart conditions in your family, or you have a particularly low level of potassium or magnesium in your blood.  

Older adults are more likely to experience side effects when taking Diflucan. If you are over the age of 60, your doctor may want to monitor you for signs of severe side effects, including liver disease and heart rhythm disorders.  

Diflucan should only be taken when deemed absolutely necessary by people who are pregnant or planning to become pregnant. Diflucan can sometimes pass into breast milk. Speak to your doctor about your options when breastfeeding.  

Does Diflucan interact with other medications? 

Diflucan can interact with the other medications that you are using at the same time. In some cases, the interactions between two substances in your body can cause dangerous reactions or side effects. Because of this, it is important to tell your consultant or doctor about any other substances that you are taking with Diflucan, including over-the-counter medications and herbal remedies.  

Diflucan can interact negatively with several medications, you doctor will check for any interactions before prescribing. 

 In some cases, Diflucan can have signficant effect on your heart rhythm if taken alongside other medication that prolong the QT interval which will need careful checking before your doctor prescribed. 

Diflucan can sometimes change the way that other medications are removed from your system, which means that you will be more at risk of negative side effects. Diflucan can change the way that substances like cisapride exit the body.  

Where can you buy Diflucan? 

Diflucan can be purchased online both in its branded and generic forms through one of our partner pharmacies. Begin your consultation now.  

Can I get Diflucan without a prescription? 

Diflucan is not available to purchase without a prescription.  


Drugs.com, 2020, online, “Fluconazole Side Effects”  [Accessed 15th of January 2020], Available on: https://www.drugs.com/sfx/fluconazole-side-effects.html 

Mayo Clinic, online, 2020, “R Fluconazole (Oral Route)?”[Accessed 15th of January 2020], Available on: https://www.mayoclinic.org/drugs-supplements/fluconazole-oral-route/side-effects/drg-20071428?p=1 

Medicines.org.uk, online, 2020, “Fluconazole 150mg Capsules” [Accessed 15th of January 2020], Available on: https://www.medicines.org.uk/emc/product/6086/smpc 

Stewart, M. 20th of November, 2017, online, 2020, “Fluconazole for fungal infections”[Accessed 15th of January 2020], Available on: https://patient.info/medicine/fluconazole-for-fungal-infections-diflucan 

Assessed by:

Dr Imran Malik, General practitioner
Registration number: GMC: 4741365

Dr Imran Malik studied undergraduate medicine at King's College University in Central London and clinical studies at the prestigious King's College Hospital. He graduated with a MBBS degree in 2000 and went on to gain postgraduate memberships with the Royal Society of Medicine and also General Practice in 2006.