BioStacks
Best for
Ingredients (4)
Magtein
100%Dose
2000 mg
Target
100–400 mg
Form
Premium
Magnesium L-Threonate
100%Dose
145 mg
Target
100–400 mg
Form
Premium
L-Theanine
100%Dose
200 mg
Target
100–250 mg
Form
—
Apigenin
100%Dose
50 mg
Target
50–200 mg
Form
—
Other Ingredients (5)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
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
HypromelloseCapsule
Plant-derived capsule material from cellulose
LeucineFlow Aid
Branched-chain amino acid used as a processing aid
How to Take It
Best taken in the evening
Used before bed for sleep.
With or without food
Space it a couple of hours from Iron and Calcium
On the label
Take 1 pack 30 minutes prior to sleep
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$109.95
Pricier than 99% 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.