Source Naturals Serene Science 5-HTP 200 mg - 60 Capsules

Our verdict

Source Naturals Serene Science 5-HTP 200 mg - 60 Capsules works out to $0.27 per serving of 5-htp, at 200mg per serving in capsule form. That puts it around the median of the 63 5-htp products we can price per dose, where the typical serving costs $0.17, a Value Index of 0.6 where the median product is 1.0. One container lasts 60 days at the label dose of 1 serving a day, about $8.04 a month. We could not verify a third-party certification for Source Naturals 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.