Nystatin is commonly used to treat oral candidiasis (thrush) and intestinal candidiasis. It is also used to treat vaginal yeast infections, cutaneous candidiasis (skin infections), and other fungal infections caused by Candida. Nystatin is usually prescribed for localized infections in the mouth, skin, or gastrointestinal tract.
Common side effects of nystatin include nausea, vomiting, diarrhea, and stomach cramps. For oral administration, some people may experience a bitter taste or a mouth irritation. In rare cases, people may experience skin rash or allergic reactions, such as swelling or difficulty breathing. Severe side effects are rare when used topically or orally for local infections.
Nystatin should be used with caution in individuals with a history of allergic reactions to antifungal medications. It should not be used as a systemic treatment for fungal infections outside of the intestines or mouth unless directed by a healthcare provider. Pregnant or breastfeeding women should consult their healthcare provider before using nystatin, although it is generally considered safe in these situations when used appropriately.
An overdose of nystatin is unlikely to cause serious harm because it is not significantly absorbed into the bloodstream when taken orally for localized infections. However, excessive use may lead to gastrointestinal side effects like nausea, vomiting, and diarrhea. If an overdose is suspected, it is important to contact a healthcare provider for guidance.