L-lysine

Lysine · Foundation

LimitedLittle human data, early, small, or narrow.

An essential amino acid sold mainly for cold sores, on old and mixed trials.

What the evidence says

Some older trials show fewer herpes outbreaks at gram doses; others found nothing.

What studies used

Trials commonly use 1-3 g per day.. Any time..

Reported from published studies and product labelling — a record of what was used in research, not a recommendation. What is right for you is a conversation with a clinician.

Watch out for

Well tolerated; kidney disease at high doses

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Where next

Every supplement in the catalogThe full shelf, grouped and evidence-tiered.→The compound indexSteroids, nootropics and research chemicals.→The peptide indexInjectable peptides and what trials used.→