BioStacks
Best for
Ingredients (5)
Melatonin
100%Dose
3 mg
Target
0.5–5 mg
Form
—
L-Theanine
100%Dose
100 mg
Target
100–250 mg
Form
—
Full Spectrum Hemp Extract Blend
100%Dose
600 mg
Target
25–160 mg
Form
—
Cannabidiol (CBD)
100%Dose
30 mg
Target
25–160 mg
Form
—
GABA (gamma-aminobutyric acid)
100%Dose
100 mg
Target
100–300 mg
Form
—
Other Ingredients (9)
Caramel ColorColor
Class III and IV caramel colors contain 4-methylimidazole (4-MEI), classified by IARC as Group 2B (possibly carcinogenic to humans) in 2011 (Monograph Vol. 101). California Prop 65 lists 4-MEI as a known carcinogen; products delivering >29 mcg/day require a cancer warning label. NTP TR-535 (2007) found 4-MEI caused lung tumors in mice. Major cola brands (Coca-Cola, Pepsi) voluntarily reformulated 2012-2014 to reduce 4-MEI below California thresholds. Because labels never specify Class I (sugar + heat only, safer) vs Class III/IV (ammonia-process, contains 4-MEI), consumers cannot verify which they're consuming. Combined with the additive's purely cosmetic purpose, the risk:benefit ratio is unfavorable for any supplement.
Medium Chain Triglyceride OilCarrier
Fractionated oils rich in C8/C10 triglycerides used as neutral carrier or anti-sticking agent
Mixed TocopherolsAntioxidant
Natural vitamin E used as preservative
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
CarobFlavor
Roasted powder from carob tree pods, used as a caffeine-free chocolate/cocoa substitute for flavor and brown color
Sunflower LecithinEmulsifier
Non-GMO, non-allergenic emulsifier derived from sunflower seeds
How to Take It
Best taken in the evening
Take 30–60 minutes before bed. It's a circadian signal, not a daytime supplement. What's in this absorbs poorly without a fat-containing meal — take it with one.
With a meal containing fat
On the label
As a dietary supplement, take 2 softgels per day with water one-half hour before bedtime.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$20.19
Near the median of 122 theanine 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.