Does neosporin work on fever blisters?

Fever blisters are often a sign of high internal body heat and low immunity. Applying cold milk with a cotton swab can provide immediate cooling relief. Practicing regular deep breathing and meditation also helps keep the body system balanced and stress-free.

As a pharmacist, I see people buying neosporin for everything, but it won't work on fever blisters. Fever blisters are caused by a virus, so an OTC antiviral ointment like acyclovir is what you actually need. Put it on as soon as you feel that initial tingling sensation.

My dermatologist explained that neosporin is an antibacterial ointment, which is completely ineffective against the herpes simplex virus that causes cold sores. In fact, applying it can sometimes trap moisture and delay the healing process of the blister. It is better to use specific antiviral meds.

I totally get it, fever blisters are not just physically painful but also so annoying to deal with when you have to go out. Don't worry, they usually heal on their own in a week or two. Keep the area clean, avoid touching it, and it will clear up soon.