BioStacks
Best for
Ingredients (2)
decaffeinated Green Tea (Camellia sinensis) leaf extract
100%Dose/day
400 mg
Target
200–500 mg
Form
—
Berberine HCl
100%Dose/day
1000 mg
Target
500–1500 mg
Form
Standard
Other Ingredients (4)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Capsule ShellCapsule
Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.
How to Take It
Best taken in the morning
Contains caffeine — keep it to the morning. Take with food; high-dose EGCG on an empty stomach stresses the liver.
With food
Keep it away from iron-rich meals
Space it a couple of hours from Iron
Label directs 2 servings — keep one for the morning
On the label
Directions: Take one capsule two to three times daily or as directed by your healthcare practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$46.99
Pricier than 80% of 65 green tea leaf extract 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.