BioStacks
Best for
Ingredients (5)
L-Tryptophan
80%Dose
200 mg
Target
250–1000 mg
Form
—
Acetyl-L-Carnitine
50%Dose
250 mg
Target
500–2000 mg
Form
—
L-Tyrosine
50%Dose
250 mg
Target
500–2000 mg
Form
—
DL-Phenylalanine
50%Dose
250 mg
Target
500–1500 mg
Form
—
Taurine
25%Dose
250 mg
Target
1000–3000 mg
Form
—
Other Ingredients (2)
Ascorbyl PalmitateAntioxidant
Fat-soluble form of vitamin C used as preservative
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.
How to Take It
Best taken in the evening
Contains Tryptophan, so it belongs in the evening. Carnitine is easier on the stomach taken with food.
With food
Tryptophan does better on an empty stomach, but something else in this bottle needs food. Taking the whole product with a meal is the better trade — an upset stomach is why most people stop.
Keep it away from protein-heavy meals
Space it a couple of hours from SAMe
On the label
As a dietary supplement, take 2 capsules, 1-2 times daily, between meals.
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
$56.60
Pricier than 90% of 73 sleep 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.