What should i put on a cold sore that is popped?

3 things: The herpetic lesion lasts7-14 days no matter what. If it is unsightly you can get special little band aids to cover. You can use an rx antiviral creme to lessen time and severity. Lastly. Otc cremes can be used which are mostly palliative.

Not antivirals: If this is herpes simplex topical antivirals will not shorten the duration of the lesion or ameliorate the discomfort. All they do is reduce the amount of virus being shed so that you are less infective to others if the lesion touches them. It may, however, induce resistance of the virus to that medication. Use protective topical applications available otc. Check with your friendly pharmacist.