PlainVitamins

non-nutrient/non-botanical

Soy Isoflavones supplements

Half of the 29 soy isoflavones supplements in the NIH label database that print an amount list 30 mg or less per serving; the middle half list 25 mg to 50 mg (DSLD version 9.4.0, January 2026).

Products listing it
3629 print an amount; 7 list it inside a blend without an amount
Median per serving
30 mgmiddle half 25 mg to 50 mg

How much soy isoflavones do supplements contain?

The median product lists 30 mg per serving. One in ten lists 24 mg or less, one in ten 150 mg or more. The amount printed most often is 30 mg (9 products).

Products by amount of soy isoflavones per serving

29 products, log scale; extreme 0.2% at each end left out of the drawing.

Soy Isoflavones: products by amount per serving3 mg10 mg30 mg100 mg
Soy Isoflavones: products by amount per serving3 mg10 mg30 mg100 mg
Soy Isoflavones: products by amount per serving3 mg10 mg30 mg100 mg300 mg
Soy Isoflavones: products by amount per serving3 mg10 mg30 mg100 mg300 mg
Soy Isoflavones: products by amount per serving3 mg10 mg30 mg100 mg300 mg
The amounts printed most often
Amount per servingProductsFor example
30 mg9 Womans Hormone Support (Fully Flora); Menopause Support (Nature's Craft); Menopause Complex (NusaPure)
25 mg7 Core Basics (Ketolabs); Menoquil (Pharmaxa Labs); AM Formula (Natrol)
50 mg2 Menoprin (Approved Science)
250 mg2 Ultra-Menoease (Douglas Laboratories); Soy Isoflavones Plus (Esmond Natural)
2 mg1 Opti-Women (ON Optimum Nutrition)
5 mg1 Prostara (Pharmaxa Labs)
20 mg1 Super Antioxidant (Nature's Blend)
40 mg1 Non-GMO Soy Isoflavones (Bluebonnet)
52.5 mg1 Flash Fighters (Puritan's Pride)
60 mg1 Cholesterol Support (Best Naturals)

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most soy isoflavones?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

In which products and brands?

Products listing soy isoflavones by DSLD product type

Soy Isoflavones by product typeOther Combinations23Botanical with Nutrients2Non-Nutrient/Non-Botanical2Botanical2
Soy Isoflavones by product typeOther Combinations23Botanical with Nutrients2Non-Nutrient/Non-Botanical2Botanical2
Soy Isoflavones by product typeOther Combinations23Botanical with Nutrients2Non-Nutrient/Non-Botanical2Botanical2
Soy Isoflavones by product typeOther Combinations23Botanical with Nutrients2Non-Nutrient/Non-Botanical2Botanical2
Soy Isoflavones by product typeOther Combinations23Botanical with Nutrients2Non-Nutrient/Non-Botanical2Botanical2

Brands listing it most: Natrol (4), Approved Science (3), Pharmaxa Labs (2), ON Optimum Nutrition (1), Nature's Blend (1), Ketolabs (1), Super Nutrition (1), Fully Flora (1), Nature's Craft (1), NusaPure (1).

Every product listing soy isoflavones

36 products, A to Z by name (page 1 of 1), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

Where next?