Also for those who're having an outbreak then be conscious of the L-Arginine to L-Lysine ratio in your weight-reduction plan you'll be able to look online for charts with the ratio of L-Lysine to L-Arginine in different meals. I do know that I have not had a cold sore since taking these. I've been taking a special lysine product (one thousand mg daily). This is THE ONE lysine product I exploit on a regular basis