Microinch is a length measurement unit. A microinch (Âµin) is a non-SI (non-System International) measurement unit of length or distance, and equal to one millionth of an inch (0.000001 inch).ORT?
Responses (2) Mupirocin is an antibacterial so it won't work on cold sores, which is a viral infection. For what its worth i had a cold sore the size of a dime last week and after 4 days of mupirocin it almost completely vanished. I have never got rid of a cold sore so quickly.
Tetracaine cream (Viractin) and lidocaine (Zilactin-L) are topical anesthetics that can relieve the pain and itching of cold sores. These products are applied to cold sores up to 6 times a day for best results.