[nih.gov](http://pmc.ncbi.nlm.nih.gov/articles/PMC1273623)You probably have ever been to a store that sells vitamins and dietary supplements you could have seen a bottle of Lysine and wondered what it was used for, effectively taking two capsules a day when you've the outbreak can restrict your struggling period and taking two capsules a day before you've gotten a get away can hold an outbreak off.