What it is used for
- Oral thrush (oral gel)
- Vaginal thrush
- Athlete's foot and other skin fungal infections
- Fungal nappy and skin-fold rashes
- Angular cheilitis (cracks at the corners of the mouth)
How it works
Miconazole blocks the production of ergosterol, a key part of the fungal cell membrane, weakening the membrane and killing the fungus. Applied as a gel, cream, or vaginal product, it treats the infection where it sits.
How it is taken
Available as an oral gel, skin cream, powder, and vaginal cream or pessary, many sold over the counter. The oral gel is held in the mouth before swallowing, while skin and vaginal forms are applied to the affected area. Use it exactly as the label, pharmacist, or doctor directs, and continue for the full course, including a few days after symptoms clear.
No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.
Common side effects
- Mild burning, stinging, or irritation where applied
- Unpleasant taste or mild nausea with the oral gel
- Redness of the skin
Serious effects — get help
- Severe allergic reaction (rash, facial or throat swelling, difficulty breathing)
- Choking risk with the oral gel, especially in very young infants
- Severe local blistering or worsening of the rash
If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.
Interactions to watch
- Warfarin and other blood thinners (even the gel can increase bleeding risk)
- Some diabetes tablets and certain other medicines processed by the liver
- Vaginal forms may weaken latex condoms and diaphragms
- Tell your clinician you use miconazole, especially if you take warfarin
Who should take care
- The oral gel must be used carefully in infants to avoid choking; follow age guidance on the label
- Tell your doctor if you take warfarin
- See a clinician for first or recurrent vaginal thrush
- Avoid contact with the eyes
- Use in pregnancy on clinical advice