BioStacks
Best for
Ingredients (1)
L-Theanine
100%Dose
200 mg
Target
100–250 mg
Form
—
Other Ingredients (7)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
ShellacCoating
Natural resin secreted by the lac bug, used as a coating and glazing agent for tablets and pills
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Croscarmellose SodiumDisintegrant
Cross-linked cellulose derivative used as a superdisintegrant
Dicalcium PhosphateBinder
Calcium and phosphorus compound used as binder
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
Price Check
$9.99
Cheaper than 95% of 118 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.