NOW Foods Supplements, 5-HTP (5-hydroxytryptophan) 100 mg…

Our verdict

NOW Foods Supplements, 5-HTP (5-hydroxytryptophan) 100 mg… works out to $0.13 per serving of 5-htp, at 100mg per serving in capsule form. That puts it below the median of the 63 5-htp products we can price per dose, where the typical serving costs $0.17, a Value Index of 1.2 where the median product is 1.0. One container lasts 240 days at the label dose of 1 serving a day, about $4.00 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.