Can you put neosporin on a fever blister?

I completely panicked the first time I got a fever blister and tried putting all sorts of creams on it. It turns out Neosporin is an antibacterial, so it won't actually kill the herpes virus causing the blister. Don't worry though, it's very common and heals on its own or with proper antiviral creams.

Fever blisters usually arise when the body is stressed and run down. Since Neosporin is for bacterial cuts, it won't heal the viral blister itself. Try to rest, drink warm herbal tea, and practice gentle sheetali pranayama to cool your system.

Don't bother using Neosporin. It is an antibiotic ointment and completely useless against viral cold sores. Go to a pharmacy and ask for an antiviral cream, or better yet, get a doctor's prescription if it's very painful.

Agreed, Neosporin won't work on a viral blister. You need an antiviral ointment like acyclovir to actually heal it.

I've dealt with these annoying blisters for years. Neosporin only helps if the blister pops and gets a secondary bacterial infection, but for the actual sore, you need an antiviral cream. Apply it the moment you feel that initial tingling sensation to stop it from growing.

Applying Neosporin on a cold sore is like bringing a bat to a football match—wrong tool, bro! Since it's viral, you need antiviral creams. Save the Neosporin for when you scrape your knee!