After initial outbreak, I was prescribed
Valtrex to use
for a recurrence. Very bad headaches resulted. Was discontinued. With next occurrence, I asked for another anti-viral and was prescribed Acyclovir. This one caused headaches, backache, confusion and fatigue. Was stopped. I am now having a recurrence and didn't take anything. After about 7 days, I felt it was almost over, then wham....came back with a new leison and flu-like symptoms.