Question: what is the maximum amount of lysine you can take in a day?
Answer: For cold sores (herpes simplex labialis): 1000 mg of lysine taken daily in up to two divide doses for up to 12 months, or 1000 mg taken three times daily for 6 months has been used. For preventing cold sores from recurring, 500-1248 mg taken daily or 1000 mg taken three times daily has been used.