Yes, but it's not: necessarily effective. l-lysine may decrease the number & duration of HSV I (cold) sore outbreaks, but not necessarily HSV II (genital herpes). l-lysine can increase the amount of calcium your body absorbs. While food (like dairy) isn't a problem, a healthy young guy like you shouldn't take calcium supplements at the same time. This includes calcium-containing antacids.
Answered 9/22/2015
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