Also in case you're having an outbreak then be conscious of the L-Arginine to L-Lysine ratio in your food regimen you may look on-line for charts with the ratio of L-Lysine to L-Arginine in numerous foods. I do know that I've not had a chilly sore since taking these. I've been taking a distinct lysine product (1000 mg every day). This is THE ONE lysine product I take advantage of frequently