THORNE Lysine, 500 mg Essential L-Lysine Amino Acid, 60 Capsules

Our verdict

THORNE Lysine, 500 mg Essential L-Lysine Amino Acid, 60 Capsules works out to $0.25 per serving of l-lysine, at 500mg per serving in capsule form. That puts it above the median of the 54 l-lysine products we can price per dose, where the typical serving costs $0.09, a Value Index of 0.4 where the median product is 1.0. One container lasts 60 days at the label dose of 1 serving a day, about $7.50 a month. Thorne appears in the NSF Sport public registry. Worked out from the current retail price as of 2026-11-13; confirm the live price on Amazon.com before buying.