cold sores
"I am 34 years old and have been a sufferer of cold sores from the age of 9 or 10.  I asked my doctor about treatment and she prescribed Valtrex for me in 2002.  When I get that tingling feeling in my lip I take a pill then take one exactly 12 hours later. I have not had a visible cold sore in nearly 10 years.  Valtrex is a little expensive, about $4.00 per pill, and I use about 15-20 pills per year.  As a long time user I would definitely recommend this medicine to anyone."