Quantum Health L-Lysine 500 mg Essential Amino Acid Supplement

Our verdict

Quantum Health L-Lysine 500 mg Essential Amino Acid Supplement works out to $0.07 per serving of l-lysine, at 500mg per serving in tablet form. That puts it below the median of the 54 l-lysine products we can price per dose, where the typical serving costs $0.09, a Value Index of 1.2 where the median product is 1.0. One container lasts 100 days at the label dose of 1 serving a day, about $2.22 a month. We could not verify a third-party certification for Quantum 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.