This **L-Lysine** delivers 1,000mg per tablet, hitting the bottom of the 1–3g range used in cold-sore research — enough to start supporting reduced herpes simplex (cold sore) recurrence, though the clinical evidence is genuinely mixed. Some trials show fewer, milder outbreaks; others find no real effect, and the positive studies often used 2–3g daily. If cold-sore prevention is your goal, 1,000mg is a reasonable starting point, but you may need 2–3 tablets to match those higher intakes.

Lysine is an essential amino acid your body can't make on its own. But most people already get plenty from a normal diet of meat, fish, and dairy, so supplementing mainly makes sense if you're targeting recurrent cold sores specifically. The tablet uses standard lysine hydrochloride, a well-absorbed form, taken once daily on an empty stomach.