Now Supplements, L-Lysine (L-Lysine Hydrochloride) 500 mg, Amino Acid…

Our verdict

Now Supplements, L-Lysine (L-Lysine Hydrochloride) 500 mg, Amino Acid… works out to $0.04 per serving of l-lysine, at 500mg per serving in tablet form. That puts it the cheapest quarter of the 54 l-lysine products we can price per dose, where the typical serving costs $0.09, a Value Index of 2.0 where the median product is 1.0. One container lasts 500 days at the label dose of 1 serving a day, about $1.32 a month. We could not verify a third-party certification for NOW Foods in a public registry. Worked out from the current retail price as of 2026-11-13; confirm the live price on Amazon.com before buying.