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
How to Take It
Best taken in the evening
Calming — common before bed, or in the morning when paired with caffeine for focus.
With or without food
On the label
As a dietary supplement, take one (1) tablet one to two times daily as needed, preferably on empty stomach, or as directed by your qualified healthcare professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$9.99
Cheaper than 95% of 101 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. 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.