BioStacks
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Ingredients (2)
Suntheanine® L-Theanine
100%Dose
200 mg
Target
100–250 mg
Form
Premium
Vitamin B6
17%Dose
4.3 mg
Target
25–100 mg
Form
Premium
Other Ingredients (3)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Best taken in the evening
The Theanine in it is what pulls this toward the evening. Vitamin B6 is easier on the stomach taken with food.
With food
On the label
Adults take one (1) capsule daily on an empty stomach.
The label says to take it on an empty stomach. What's in this one sits better with food, and you give up little by taking it that way.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$28.00
Near the median 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. 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.