BioStacks
Best for
Ingredients (4)
Soy Isoflavone concentrate
100%Dose
50 mg
Target
40–90 mg
Form
—
L-Theanine
100%Dose
100 mg
Target
100–250 mg
Form
—
Fenugreek Seed Extract
60%Dose
300 mg
Target
500–1000 mg
Form
—
Isoflavones
50%Dose
20 mg
Target
40–90 mg
Form
—
Other Ingredients (10)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Oleic AcidEmollient
A monounsaturated fatty acid used as an emollient and penetration aid
Polyethylene Glycol (Coating)Coating
A polyether polymer used as a tablet coating and plasticizer
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Carnauba WaxCoating
Hard plant wax from the carnauba palm used to glaze gummies and tablets
Croscarmellose SodiumDisintegrant
Cross-linked cellulose derivative used as a superdisintegrant
EthylcelluloseCoating
A cellulose-derived polymer used for film coating and binding.
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
Take 1 caplet daily.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$34.99
Pricier than 90% of 13 soy isoflavone 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.