上火了嘴唇上长了一堆小包，上边有白头那种。有什么otc的药膏可以用么

Valtrex is the most effective. If you take it when you feel the first sign of flaring up, it could reduce your symptoms by 80-90%. You do need a prescription for it. You can ask your pcp to prescribe it for you. 30 tablets can last you a year if you only take it as needed. For best results, make sure you take a high dose 2g once or twice a day only for one day.