NOW Foods L-Lysine 1000mg - Double Strength - 300 Tablets - Non-GMO…

Our verdict

NOW Foods L-Lysine 1000mg - Double Strength - 300 Tablets - Non-GMO… works out to $0.09 per serving of l-lysine, at 1000mg per serving in tablet form. That puts it around the median of the 54 l-lysine products we can price per dose, where the typical serving costs $0.09, a Value Index of 1.0 where the median product is 1.0. One container lasts 300 days at the label dose of 1 serving a day, about $2.80 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.