Mometasone and Cold Sores: What You Need to Know

Mometasone is not typically used to treat fever blisters (also known as cold sores). Fever blisters are caused by the herpes simplex virus and are usually treated with antiviral medications such as acyclovir or valacyclovir. Mometasone is a corticosteroid medication that is primarily used to reduce inflammation and itching caused by various skin conditions such as eczema, psoriasis, and allergic reactions.