Hi!XXXXXXX,\r\rIf you are sure about the blisters over the penis then that would suggest of HERPES GENITALIS .This is a viral condition seen over penis or lips. It can be recurrent problem. Kindly let me know following points :\r1) Do you actually see blisters.\r2) Do you experience any pain or fever.\r3) Were you stressed up the previous week.\r4) Did your wife had any sort of infection.\r5) Did you take any other medicine before getting this apart from asprin.\r5) Did you have similar episodes in past.\r\rFor herpes infection you can take antiherpetic drugs like acyclovir. It is a prolonged and heavy dosage. Even the latest medicine called valacyclovir would help where the dosage is small with less frequency. This would subside in aprrox 7 days time if it is herpes.\r\rYour alcohol should not be the reason for this.\r\rIf you can let me know the above points I can help you further.\r\r‘Hope I have answered your query, I will be available to answer your follow up queries’.\r\r\r