Medically reviewed by Lindsay Cook, PharmD Vitamins C, A, and B, as well as the amino acid l-lysine, are supplements that can ...
Q. I had chicken pox as a child and shingles as an adult. I have gotten the Shingrix vaccine. For an occasional cold sore, I use acyclovir, but I take L-lysine daily for prevention. Has anyone studied ...
Q: Whenever I feel a cold sore coming on (the telltale “tingly feeling”), I take L-lysine tablets. When I take 1,000 milligrams a day, often the cold sore will never develop. If it got a head start, ...