Posted by not a doc, but.... on March 02, 2004 at 18:20:35:
In Reply to: lip blisters posted by Dick on March 02, 2004 at 12:36:15:
In addition to the lysine (Country Life and NOW are good brands; stay away from drugstore brands) there are certain foods that will make it more likely for you to get cold sores:
any food or pill heavy in arginine (peanuts; corn; many "muscle building" and "diet" formulas)
chocolate
colas
and sunlight
Avoid the above, take a _good_ brand of lysine, and you may find your problem disappearing, assuming it is cold sores.