herpes simplex, suppression
"I am 60 years old, female, have had many very painful breakouts over the last 15 yrs. I have weakened immune system. Finally after two breakouts within 2 months, I am now on 500 mg valacyclovir every night. So far, no problems except I have gained weight and feel tired all the time, but I take other medicines that cause this also. I recommend it highly."