WHAT CAN I EXPECT?
Valacyclovir usually starts treating cold sore symptoms as soon as it's in your system but can take several days to produce a noticeable improvement. It can take up to 10 days (or, in some cases, even longer) for herpes blisters to heal even with Valacyclovir treatment. The key is to start your treatment as soon as the first signs of a cold sore appear (tingling, itching, burning). This will speed healing and prevent the outward signs of cold sores (fluid filed sacks, discoloration, swollen lips).