BioStacks
Best for
Ingredients (9)
L-Leucine
100%Dose
3000 mg
Target
2000–5000 mg
Form
—
L-Lysine HCl
100%Dose
1200 mg
Target
1000–3000 mg
Form
—
L-Methionine
100%Dose
220 mg
Target
200–1000 mg
Form
—
L-Threonine
100%Dose
730 mg
Target
500–4000 mg
Form
—
L-Tryptophan
92%Dose
230 mg
Target
250–1000 mg
Form
—
Other Ingredients (2)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
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
Consume 3 tablets twice daily. For best results consume before and after exercise.
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.
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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.