BioStacks
Best for
Ingredients (2)
L-Tryptophan
100%Dose
1000 mg
Target
250–1000 mg
Form
—
Iron
575 mcgTrace amount — not scored
Other Ingredients (5)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Calcium CarbonateBuffer
Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Best taken in the evening
Take at night. Other amino acids compete for brain uptake, so a protein-heavy meal blunts it.
On an empty stomach
Keep it away from protein-heavy meals
Space it a couple of hours from SAMe
On the label
1 capsule three times daily, between meals and preferably with fruit juice. To support restful sleep, take 3 capsules before bed.
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.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$9.23
Cheaper than 99% of 18 tryptophan supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and 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. clinical 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.