Getting rid of a cold sore in 24 hours is unlikely. However, antiviral medications can help cold sores heal faster when used as prescribed by a healthcare provider.
The most commonly used treatments to speed up cold sore healing are antiviral medicines, such as acyclovir cream or valacyclovir tablets.
If you think you have a cold sore, it is best to see your primary care provider or a dermatologist for an evaluation. People who have several outbreaks each year may benefit from a longer treatment plan to help reduce how often cold sores occur.