PlainVitamins

botanical

Soy supplements

Half of the 250 soy supplements in the NIH label database that print an amount list 125 mg or less per serving; the middle half list 60 mg to 426.25 mg (DSLD version 9.4.0, January 2026). The 40 products whose only supplement ingredient is soy list a median of 976.5 mg.

Products listing it
378250 print an amount; 128 list it inside a blend without an amount
Median per serving
125 mgmiddle half 60 mg to 426.25 mg

How much soy do supplements contain?

The median product lists 125 mg per serving. One in ten lists 25 mg or less, one in ten 984.7 mg or more. The amount printed most often is 100 mg (33 products).

Products by amount of soy per serving

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

Soy: products by amount per serving10 mg100 mg1,000 mg10,000 mg
Soy: products by amount per serving10 mg30 mg100 mg300 mg3,000 mg
Soy: products by amount per serving10 mg30 mg100 mg300 mg1,000 mg10,000 mg
Soy: products by amount per serving10 mg30 mg100 mg300 mg1,000 mg3,000 mg10,000 mg
Soy: products by amount per serving10 mg30 mg100 mg300 mg1,000 mg3,000 mg10,000 mg
The amounts printed most often
Amount per servingProductsFor example
100 mg33 Menopause Formula (GNC); Bone Support With Ostivone (Twinlab); Estroflavone (Douglas Laboratories)
50 mg17 Non-GMO Soy Isoflavone Concentrate 50 mg (GNC Natural Brand); Femalgen (R-Garden); Omega Complete For Women (Bronson Laboratories)
150 mg12 Phytoestrogen Complex (The Vitamin Shoppe); Gut Care (ENZO); Phytoestrogen Essential Complex (doTERRA Women)
750 mg12 Soy Isoflavones 750 mg (Puritan's Pride); Non-GMO Soy Isoflavones (Nature's Bounty); Soy Isoflavones 750 mg (Esmond Natural)
40 mg11 GluComplex Gold (SimplyBest); Menopause Support Complex (GreeNatr Premium); Fe-Mon-9 (Confidence USA)
25 mg10 True Food Wise Woman (Higher Nature); Vegetarian Women's Multi with Iron (365 Everyday Value); Prostate (Nature's Way)
200 mg10 Feminene Female Support Formula (Market America); Testrogain (NewtonEverett); Soy Isoflavones 200 mg (The Vitamin Shoppe)
250 mg10 Osteo Support (Vitabase); Cardio Support (Vitabase); Cholesterol Support (Vitabase)
1,000 mg10 Soy Isoflavones (Vitabase); Menopause Support (Vitabase); Soy Isoflavones Standardized Extract 1000 mg (Martin Avenue Pharmacy)
125 mg8 Phyto-Estrogen Formula (GNC Women's); Ostivone Plus (OL Olympian Labs); Prostate 2.4 (Theralogix Nutritional Science)

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?

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).

Have the amounts changed over the years?

Products whose current label entered DSLD in 2012 list a median of 100 mg; those entered in 2025, 250 mg.

Median soy per serving by the year the label entered DSLD (years with 20+ products)
YearProductsMedian per serving
201225100 mg
20202175 mg
202331450 mg
202523250 mg

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing soy by DSLD product type

Soy by product typeOther Combinations138Botanical74Botanical with Nutrients29Non-Nutrient/Non-Botanical9
Soy by product typeOther Combinations138Botanical74Botanical with Nutrients29Non-Nutrient/Non-Botanical9
Soy by product typeOther Combinations138Botanical74Botanical with Nutrients29Non-Nutrient/Non-Botanical9
Soy by product typeOther Combinations138Botanical74Botanical with Nutrients29Non-Nutrient/Non-Botanical9
Soy by product typeOther Combinations138Botanical74Botanical with Nutrients29Non-Nutrient/Non-Botanical9

Brands listing it most: TerraVita Premium Collection (10), Solgar (8), Natrol (6), Higher Nature (6), Metagenics (6), Vitabase (6), Herbal Terra (6), Hawaii Pharm (6), Nature's Way (5), Source Naturals (5).

Every product listing soy

378 products, A to Z by name (page 6 of 8), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

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