Thorne L-Glutamine, 500 mg per Capsule, Amino Acid Supplement…

Our verdict

Thorne L-Glutamine, 500 mg per Capsule, Amino Acid Supplement… works out to $0.29 per serving of l-glutamine, at 500mg per serving in capsule form. That puts it above the median of the 36 l-glutamine products we can price per dose, where the typical serving costs $0.15, a Value Index of 0.5 where the median product is 1.0. One container lasts 90 days at the label dose of 1 serving a day, about $8.67 a month. Thorne appears in the NSF Sport public registry. Worked out from the current retail price as of 2026-11-14; confirm the live price on Amazon.com before buying.