Antifungal medicines treat fungal infections. Fungus in the soil, air and on your skin can cause yeast infections, ringworm, and nail and skin infections. Breathing in fungal spores can lead to respiratory illnesses. People who have weak immune systems are more prone to fungal infections that require antifungal medicine.
Antifungals are medicines that kill or stop the growth of fungi (the plural of fungus) that cause infections. They are also called antimycotic agents.
Fungal infections can affect the:
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy
Fungi grow as yeasts, molds or a combination of both. They reproduce through very tiny spores. These spores can exist in soil or become airborne.
Anyone can get a fungal infection. Most fungi cause no problems or the infections are easily treatable.
People who have compromised immune systems are more likely to develop serious fungal infections. These infections are called opportunistic infections. They can be life-threatening for people who have:
Antifungals treat these types of fungal skin infections:
Antifungals also treat more dangerous fungal infections like:
Antifungal medicines can kill a fungus. Or they may stop it from multiplying or growing. There are several classes of antifungal medications and different types of medicines. Your healthcare provider will select the best prescription medicine. Or they may guide you to an effective over-the-counter (OTC) treatment. Options include:
There are OTC and prescription antifungal medicines. Talk to your healthcare provider about what treatment to use.
Antifungals come in different forms, including:
Treatment length varies depending on the fungal infection. Some fungal skin infections like ringworm clear up in a few weeks. But it can take months or years to clear up some fungal nail, blood and lung infections.
Side effects from antifungals vary. Results depend on the type of drug, dosage (strength) and fungus. You may experience:
Rarely, an antifungal drug may cause serious problems like:
Medication safety depends on the antifungal drug. Breastfeeding infants who develop thrush (an oral yeast infection) can get antifungal mouth drops. Their moms also need treatment, typically with an antifungal skin cream. Your healthcare provider can determine whether it’s OK for you or your child to take an antifungal medicine.
Antifungal resistance means a fungus no longer responds to treatment. This response makes the fungal infection harder to treat.
Some fungi are naturally resistant to certain antifungals. Fungi may also develop resistance when you use antifungal medicine for a long time. Skipping doses, stopping treatment too soon or receiving a too-low dose can also lead to antifungal resistance.
A note from Cleveland Clinic
Antifungal medications treat fungal infections that affect the skin, nails, lungs and other organs. Some fungal infections clear up in a few weeks. Others may need months of treatment. Taking antifungal medicines for an extended period or failing to complete the prescribed treatment may lead to antifungal resistance.
Last reviewed by a Cleveland Clinic medical professional on 07/26/2021.
Learn more about our editorial process.