BioStacks
Pure Encapsulations

5-HTP (5-Hydroxytryptophan) 50 mg

1 Capsule · 180 servings

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What it does

5-HTP

Form not confirmedGrade —

Studied for low mood, but reliable evidence of benefit remains insufficient.

Sleep
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Ingredients (1)

Other ingredients

Hypoallergenic Plant FiberFiller

Plant-derived cellulose fiber used as a hypoallergenic filler, common in Thorne and Pure Encapsulations products

Capsule ShellCapsule

Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.

Lab testing

How to take it

On an empty stomach
Keep it away from protein-heavy meals
Space it a couple of hours from SAMe

On the label

As a dietary supplement, take 1 capsule, 1-4 times daily, before meals, or as directed by a health professional.

Do not combine with St. John's Wort

Each of these raises serotonin activity on top of St. John's Wort, and together they can trigger serotonin syndrome — agitation, rapid heartbeat, raised blood pressure. Not without medical supervision.

Price check

$101.40

$0.56 / serving

$10$20$50

Pricier than 99% of 61 5-HTP supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

Not medical advice. Consult your healthcare professional.

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