smarter.comAdditionally if you're having an outbreak then take heed to the L-Arginine to L-Lysine ratio in your food plan you possibly can look on-line for charts with the ratio of L-Lysine to L-Arginine in several meals. I do know that I've not had a chilly sore since taking these. I've been taking a different lysine product (1000 mg every day). That is THE ONE lysine product I use on a regular basis