Fluka 150 is a prescription antifungal tablet containing 150mg of Fluconazole. Belonging to the triazole antifungal class, this medicine acts on a specific target within the fungal cell. It is used to treat a range of fungal infections, including vaginal thrush, oral candidiasis, ringworm, and more serious systemic infections. Disruption of the fungal cell membrane is the primary mechanism through which this medicine eliminates infection.
Fluconazole is marketed under a number of brand names, each of which may be mentioned by your doctor or pharmacist when discussing treatment options. Where branded options are being considered, a registered healthcare professional may identify Fluka 150 as a suitable choice for the patient. The reference UK brand Diflucan may be better known to some patients. This is completely normal as they contain the same active ingredient.
Vaginal thrush is encountered by as many as three in four women at some point during their lives, making fungal infections among the most widespread conditions treated in UK primary care. Fungal infections affecting the skin, mouth, and other areas are also experienced by men, making this a condition that can affect people of all sexes.
Each Fluka 150 capsule is formulated with 150mg of Fluconazole as its active constituent. It is an azole antifungal agent taken by mouth. Designed with UK patients in mind, this guide covers the clinical uses of Fluka 150, the mechanism through which it works, and the safety information needed to use it correctly.
What Is Fluka 150?
Fluka 150 is a prescription-only medicine (POM) containing 150mg of Fluconazole. This medicine falls within the triazole antifungal group, where it acts selectively on fungal enzyme pathways.
Unlike topical creams applied to the skin, Fluka 150 is taken orally. This allows Fluconazole to work throughout the body, treating infections from the inside.
Medicine Detail Information
| FIELD | DETAILS |
|---|---|
| Drug Class | Triazole antifungal (azole antifungal agent) |
| Active Ingredient | Fluconazole |
| Strength | 150mg |
| Tablet Form | Oral tablet |
| Prescription Status | Prescription-only medicine (POM) |
| Therapeutic Use | Fungal infections (localised and systemic) |
| UK Reference Brand | Diflucan |
Fluka 150 is suitable for treating both localised and widespread fungal infections. Your doctor will establish the most suitable dose and length of treatment only after your individual clinical circumstances have been carefully assessed.
How Fluconazole Works in the Body
The fungal cell membrane is specifically targeted by Fluconazole, disrupting the structural integrity of the organism. Ergosterol is a substance essential to the survival and structural stability of fungal cells, making it a key clinical target.
Fluconazole inhibits a fungal enzyme called cytochrome P450 14α-demethylase. Within the fungal cell, ergosterol production depends entirely on this enzyme, which is why blocking it is so clinically effective.
Ergosterol production is brought to a complete halt by the blocking action of Fluconazole on this enzyme. Because ergosterol is absent, the structural integrity of the fungal cell membrane deteriorates, rendering it weak and porous. As a result of this structural failure, vital cellular contents escape, causing the fungal cell to die.
This targeted mechanism means Fluconazole is highly effective against susceptible fungi. Because human cell membranes rely on cholesterol rather than ergosterol, the impact of Fluconazole on human cells is minimal. This selectivity is why Fluconazole is regarded as a well-tolerated antifungal medicine in UK clinical practice.
When Doctors Prescribe Fluka 150
A wide range of fungal infections can be treated with Fluka 150, which targets the underlying organism directly. Both localised and systemic (body-wide) infections can be treated with Fluconazole.
Vaginal Candidiasis (Thrush)
Among the most frequent clinical indications for prescribing Fluka 150 is vaginal thrush. An overgrowth of the Candida fungus is responsible for triggering this condition. Itching, a burning sensation, and abnormal discharge are the characteristic symptoms through which this condition presents.
For an uncomplicated vaginal yeast infection, a single 150mg dose is frequently all that is required to resolve the infection. Many UK women receive a one-off prescription for this purpose. Always seek confirmation from your GP that thrush is the correct diagnosis before beginning any treatment.
Oral and Oesophageal Candidiasis (Oral Thrush)
Oral thrush affects the mouth, throat, and oesophagus. Because a weakened immune system reduces the body’s ability to control fungal growth, this type of infection is encountered more frequently in immunocompromised patients. Fluconazole is an effective treatment for both localised and more extensive oral candidiasis.
Skin Fungal Infections (Dermatophytosis)
Fluconazole treats a range of common skin infections effectively. Ringworm of the body (tinea corporis), jock itch (tinea cruris), and athlete’s foot (tinea pedis) are all included among the skin conditions for which Fluconazole is used. Tinea versicolor, a condition responsible for producing discoloured patches on the skin, is also addressed by this medicine.
Cryptococcal Meningitis
Cryptococcal meningitis is a severe fungal infection that affects the protective membranes surrounding the brain and spinal cord. It occurs mainly in immunocompromised patients, such as those living with HIV. Both active treatment of infection and long-term suppressive therapy aimed at preventing recurrence are supported by Fluka 150.
Systemic Fungal Infections
Deeper systemic infections that have spread into the bloodstream are among the clinical indications for which Fluconazole is prescribed. These are more serious and typically require higher doses and longer treatment courses.
Prophylaxis (Prevention)
Patients receiving chemotherapy or bone marrow transplants may be prescribed Fluka 150 preventatively. Because immunity is reduced, the risk of opportunistic fungal infections rises significantly in vulnerable patient groups. Prophylactic use reduces this risk under careful medical supervision.
Benefits of Fluka 150
Effective single-dose treatment for common thrush
For uncomplicated vaginal candidiasis, a single 150mg dose of Fluconazole is clinically proven to be effective. This makes Fluka 150 a convenient and practical treatment option. Significant relief from symptoms is experienced by most women within a few days of starting treatment.
Systemic action for widespread infections
Unlike topical antifungals, Fluka 150 works throughout the entire body. This makes it an appropriate option for infections in areas that topical creams are unable to reach effectively. It is particularly valuable for oesophageal, systemic, and meningeal fungal infections.
Broad-spectrum antifungal coverage
A broad spectrum of fungal species is covered by the antifungal activity of Fluconazole, making it a versatile treatment choice. This includes Candida, Cryptococcus, and many dermatophyte fungi. This versatility makes Fluka 150 one of the most widely used antifungals in UK clinical practice.
Suitable for long-term suppressive use
In patients with recurring infections or compromised immunity, Fluka 150 can be used long-term for suppressive therapy. This helps prevent serious infections from returning. Long-term use requires regular clinical monitoring and review by your GP or specialist.
Alternative Medicine Doctors May Consider
Doctors may consider other antifungal medicines depending on the type and severity of infection. These alternatives belong to the same or related drug classes.
- Itraconazole — another triazole antifungal used for skin infections, nail infections, and systemic conditions
- Clotrimazole — available as a topical cream or pessary for localised vaginal or skin candidiasis; available over the counter in the UK
- Nystatin — used for oral thrush, particularly in infants and immunocompromised adults
- Voriconazole — prescribed for serious or resistant fungal infections in hospital settings
- Amphotericin B — used intravenously for life-threatening systemic fungal infections
The most appropriate antifungal will be selected by your doctor after considering the type of infection, your medical history, and any other medicines currently being taken.
See available antifungal treatment options by speaking to your GP or a registered UK pharmacist.
Possible Side Effects
Like any medicine, Fluka 150 has the potential to produce side effects in some individuals. Most people tolerate it well, particularly when used as a single dose for vaginal thrush.
| COMMON SIDE EFFECTS | SERIOUS SIDE EFFECTS — SEEK IMMEDIATE MEDICAL HELP |
|---|---|
| Headache | Jaundice — identified by yellowing of the skin or the whites of the eyes — must be reported to a doctor immediately as it may signal liver involvement |
| Nausea or feeling sick | Dark urine or pale stools |
| Abdominal pain or stomach discomfort | Severe or persistent stomach pain |
| Diarrhoea | Palpitations, an irregular heartbeat, or a noticeably fast heart rate must be reported to a doctor without delay |
| Dizziness | Immediate medical attention is required if blistering, skin peeling, or a widespread rash develops, as these are recognised signs of serious skin reactions |
| Skin rash | Severe dizziness or fainting |
In most cases, common side effects are mild in nature and resolve on their own without the need for further intervention. Where side effects cause concern or fail to resolve, a pharmacist or GP should be contacted promptly.
If you experience any serious side effects, stop taking Fluka 150 and seek urgent medical attention. Where symptoms are severe or life-threatening, 999 must be called immediately.
Important Safety Advice
Drug interactions
A significant number of medicines are known to interact with Fluconazole, making a full disclosure of current treatments essential before starting this medicine. It inhibits liver enzymes that metabolise many drugs, which can increase their blood levels to harmful concentrations.
Important medicines known to interact with Fluconazole include:
- Warfarin (blood thinner) — Fluconazole can significantly increase its effect, raising bleeding risk
- Statins (cholesterol medicines) such as simvastatin — increased risk of muscle damage
- Midazolam and other benzodiazepines — the sedative effect of those medicines may be significantly intensified by Fluconazole
- Certain antihistamines (e.g., terfenadine) — risk of serious heart rhythm problems
- Ciclosporin and tacrolimus — Because Fluconazole affects how they are broken down, the blood levels of immunosuppressants such as ciclosporin and tacrolimus may be raised
- Rifampicin — The effectiveness of Fluconazole can be reduced when it is taken alongside rifampicin, meaning alternative arrangements may be needed
Your doctor and pharmacist must always be given a full and current list of every medicine being taken at the time of consultation. Because herbal supplements and over-the-counter products can also interact with Fluconazole, they must be included in the full list of treatments disclosed to your doctor or pharmacist.
Liver and kidney conditions
An adjusted dose may be required for patients whose liver or kidney function is impaired, given that Fluconazole is processed by the liver and cleared through the kidneys. Your doctor may request blood tests to monitor organ function during treatment.
Heart conditions
Fluconazole can affect heart rhythm by prolonging the QT interval. Patients with Long QT syndrome, or those already taking QT-prolonging medicines, face a heightened risk that makes this interaction particularly clinically relevant. Before treatment begins, any known heart conditions must be disclosed to your doctor.
Pregnancy and breastfeeding
Because of the potential risks to the developing foetus, Fluconazole is not a treatment that is routinely recommended during pregnancy. High doses have been associated with a risk of foetal harm in some studies. Before taking Fluka 150 during pregnancy or when a pregnancy is being planned, the risks and benefits must be discussed with your doctor without delay.
Because Fluconazole is transferred into breast milk, its use during breastfeeding requires careful discussion with a doctor. Whether breastfeeding can safely continue during treatment must be discussed with your doctor before the medicine is started.
Allergies to azole antifungals
Do not take Fluka 150 if you are allergic to Fluconazole or any other azole antifungal, such as ketoconazole or itraconazole. Skin rash, swelling of the face or throat, and difficulty breathing are signs of a serious allergic reaction, each of which requires emergency medical attention. Call 999 immediately or go to your nearest A&E if this occurs.
Alcohol
There is no specific clinical contraindication between Fluconazole and alcohol. However, alcohol can worsen nausea and dizziness, which are potential side effects of Fluka 150. It is advisable to drink in moderation during treatment. Where uncertainty exists about alcohol consumption during treatment, your GP or pharmacist should be consulted before any decision is made.
When Should You Speak to a Doctor?
Contact your GP or pharmacist promptly if:
- Where symptoms show no improvement within a few days of beginning treatment, your GP or pharmacist should be contacted promptly
- A return of symptoms shortly after completing the full course of treatment must be reported to your GP without delay
- Any symptoms that are new or worsening during treatment must be brought to the attention of a doctor without unnecessary delay
- Contact your GP if you notice yellowing of the skin or eyes, or dark urine, as these symptoms may indicate a problem with liver function that requires prompt assessment
- Heart palpitations, an irregular heartbeat, or episodes of fainting experienced during treatment must be reported to a doctor immediately
- You have a severe skin reaction at any point during treatment
Do not self-diagnose a fungal infection without first speaking to your GP or a registered pharmacist. Some symptoms of thrush can mimic sexually transmitted infections or other conditions that require different treatment. Where uncertainty remains about the nature of your symptoms, guidance can be sought from your GP or a local sexual health clinic.
Call 999 immediately or go to your nearest A&E if you experience a severe allergic reaction, difficulty breathing, or chest pain.
Can Fluka 150 Be Used With Other Medicines?
Fluconazole has a significant interaction profile with many commonly prescribed medicines. Because cytochrome P450 enzymes in the liver — which are responsible for breaking down many other medicines — are inhibited by Fluconazole, the risk of clinically significant interactions is heightened.
When these enzymes are inhibited, other medicines may build up to higher levels in the blood. This can increase both their effectiveness and their risk of side effects.
Every medicine currently being taken must be disclosed to your GP and pharmacist before a course of Fluka 150 begins. Prescription medicines, over-the-counter products, vitamins, and herbal remedies — including St John’s Wort — all fall within the scope of treatments that must be disclosed.
Storage and Handling Advice
Fluka 150 tablets must be stored at room temperature and must not be kept in conditions where the temperature exceeds 25°C. Direct sunlight and moisture must be kept away from the storage area to protect the quality of the capsules. Because heat and humidity can degrade the medicine, bathroom cabinets are unsuitable storage locations.
At all times, Fluka 150 and any other medicines in the household must be stored somewhere children cannot reach or see them. Until a dose is due, capsules must remain in their original sealed blister packaging to preserve their integrity and safety.
Once the expiry date on the packaging has been reached, the medicine must not be used under any circumstances. Before each dose is taken, the blister packaging must be examined to confirm it is undamaged and that the expiry date has not passed. Where any doubt exists about the condition or suitability of the medicine, a pharmacist should be consulted.
Responsible Access to Treatment in the UK
For the majority of clinical indications, Fluka 150 is classified as a prescription-only medicine (POM) in the UK. A single 150mg dose for vaginal thrush may be available without a prescription in some pharmacies, but only after a pharmacist consultation.
For all other indications, including recurrent thrush, oral candidiasis, skin infections, and systemic conditions, you must obtain medicine with a valid prescription from a registered healthcare professional.
Purchasing Fluconazole from unregulated online sources carries serious risks to patient safety and must be avoided entirely. Counterfeit or substandard medicines can be dangerous.
Frequently Asked Questions
Q: What is Fluka 150 used for?
A: Fluka 150 contains Fluconazole 150mg. It treats fungal infections, including vaginal thrush, oral candidiasis, ringworm, and serious systemic infections. Fluka 150 must only be used under the supervision of a registered UK doctor or pharmacist.
Q: Can I take Fluka 150 at night?
A: Yes, Fluka 150 can be taken at any time of day. Because taking Fluka 150 at night can help reduce the likelihood of nausea, evening administration may be advisable for some patients. Throughout the full course of treatment, careful adherence to the dosage and timing instructions given by your doctor is essential.
Q: Can I take fluconazole 150 once a week?
A: Yes, for recurrent vaginal thrush, doctors sometimes prescribe Fluconazole 150mg once weekly. This is a suppressive regimen. Always follow your prescribed dosage and never self-prescribe.
Q: Is fluconazole a strong antibiotic?
A: Unlike antibiotics, which target bacteria, Fluconazole is an antifungal medicine that acts specifically against fungal organisms. It must not be used to treat bacterial infections.
Conclusion
Fluka 150 is a prescription antifungal medicine containing 150mg of Fluconazole. It is used to treat a wide range of fungal infections, from common vaginal thrush to more serious systemic and meningeal conditions.
The enzyme responsible for producing ergosterol within fungal cell membranes is inhibited by this medicine, which disrupts fungal survival. Without ergosterol, fungal cells cannot survive, and the infection clears over time.
Because Fluka 150 carries a significant interaction profile and important safety considerations, medical supervision throughout its use is essential. Special caution is required in patients with liver, kidney, or heart conditions, and all concurrent treatments must be disclosed to a GP or pharmacist before starting Fluka 150. Following your doctor’s dosage instructions carefully and completing the full course of treatment are both essential to achieving the best clinical outcome.
Where uncertainty exists about whether Fluka 150 is suitable, or where concerns about a fungal infection arise, your GP or a registered UK pharmacist should be consulted.
References
- NHS. Fluconazole. Available at: www.nhs.uk
- MHRA. Fluconazole: Summary of Product Characteristics. Available at: www.gov.uk/mhra
Important Information
This article is for informational purposes only and does not replace professional medical advice. Always consult a registered healthcare professional before starting or changing any treatment.