BioStacks
Best for
Ingredients (1)
L-Theanine
100%Dose
200 mg
Target
100–250 mg
Form
—
Other Ingredients (1)
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
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
Consume one capsule daily. You can increase your intake as required or as guided by your physician.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$59.90
Pricier than 93% 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.