non-nutrient/non-botanical
Isoflavones supplements
Half of the 290 isoflavones supplements in the NIH label database that print an amount list 50 mg or less per serving; the middle half list 25 mg to 80 mg (DSLD version 9.4.0, January 2026). The 24 products whose only supplement ingredient is isoflavones list a median of 117.5 mg.
- Products listing it
- 328290 print an amount; 38 list it inside a blend without an amount
- Median per serving
- 50 mgmiddle half 25 mg to 80 mg
How much isoflavones do supplements contain?
The median product lists 50 mg per serving. One in ten lists 10 mg or less, one in ten 150 mg or more. The amount printed most often is 50 mg (33 products).
Products by amount of isoflavones per serving
290 products, log scale; extreme 0.2% at each end left out of the drawing.
| Amount per serving | Products | For example |
|---|---|---|
| 50 mg | 33 | Calcium 600 mg (Vitamin World); Multi Vitamin With Black Cohosh & Soy Isoflavones (Windmill); Soy Menopause Supplement (Nature Made) |
| 30 mg | 28 | Women's Support (Vitabase); Ortho Multi For Women (Protocol For Life Balance); Clinical Antiangiogenesis (Natural Clinician) |
| 25 mg | 22 | Soy-Futura (HerbaSway); Menopause Support (Pathway To Healing); Active Woman's Multi (Vitabase) |
| 80 mg | 21 | Don't Pause For Women (ANTIAGING Institute of California); Extra Strength Estroven (Estroven); Concentrated Soy Isoflavones (Sundown Naturals) |
| 20 mg | 15 | Clinical Prostate Suppport (Natural Clinician); Menapol Plus (SimplySupplements); DHT Blocker For Men & Women (Natrol NuHair) |
| 40 mg | 14 | Bone Support With Ostivone (Twinlab); Red Clover/Black Cohosh 225 mg / 40 mg (NOW); Promensil (Natrol) |
| 100 mg | 13 | Ultra-Menoease (Douglas Laboratories); Phytosoya (Douglas Laboratories); HerbalNutrition NovaSoy (The Professional Series) |
| 56 mg | 12 | Healthy Metabolism & Weight Management (Estroven); Energy (Estroven); Menopause Relief + Sleep (Estroven) |
| 60 mg | 11 | Nighttime (Estroven); Prostate Health Complex (Nutrients for Health); Maximum Strength + Energy (Estroven) |
| 5 mg | 8 | Women's Multiple (Radiance Select); Mega Vita Min For Women (Radiance); The Essential Woman (Barlean's) |
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 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).
- Menopause FormulaRadiance2,100 mg
- Hot FlashSource Naturals2,100 mg
- Full Spectrum Soy 1000 1,000 mgPlanetary Herbals2,000 mg
- Soy IsoflavonesNature's Way1,000 mg
- Menopause MultipleSource Naturals1,000 mg
- Prosta-ResponseSource Naturals1,000 mg
- Easy Soy IsoFlavone ConcentrateCarlson500 mg
- Soy Isoflavone 450 mg 40% ExtractTerraVita Premium Collection450 mg
Have the amounts changed over the years?
Products whose current label entered DSLD in 2012 list a median of 50 mg; those entered in 2025, 50 mg.
| Year | Products | Median per serving |
|---|---|---|
| 2012 | 25 | 50 mg |
| 2013 | 23 | 50 mg |
| 2020 | 22 | 39 mg |
| 2021 | 29 | 40 mg |
| 2022 | 27 | 40 mg |
| 2023 | 30 | 50 mg |
| 2024 | 20 | 27.5 mg |
| 2025 | 20 | 50 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing isoflavones by DSLD product type
Brands listing it most: Estroven (17), Source Naturals (12), Metagenics (6), 21st Century (6), Solgar (5), NaturesPlus (5), Natrol (5), Douglas Laboratories (5), Wonder Laboratories (4), Barlean's (4).
Every product listing isoflavones
328 products, A to Z by name (page 7 of 7), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Ultra Woman Max Daily MultiVitamin World100 mg
- Ultra-Cal NightSource Naturals6.4 mg
- Ultra-Cal Night With Vitamin KSource Naturals414 mg
- Ultra-MenoeaseDouglas Laboratories100 mg
- Ultra-OstivoneDouglas Laboratories300 mg
- Vfm-100Klaire Labs300 mg
- Vit-Power CompleteNatural Guardian · off the market25 mg
- Weight ManagementEstroven56 mg
- Wellness Essentials Men's VitalityMetagenics25 mg
- Woman's Hormone Balance SupportTotally Products30 mg
- WomenNature's Plus Source of Life · off the market50 mg
- Women's 50+ Multi-VitaminUltamins · off the market20 mg
- Women's 50+ Multi-VitaminCalifornia Gold Nutrition Ultamins20 mg
- Women's Health Menopause Supportph-D Feminine Health Support40 mg
- Women's Hormone BalanceBIOVEA75 mg
- Women's Menopause FormulaBayer One A Day60 mg
- Women's Menopause SupportDoctor's Best106 mg
- Women's MultiNatures Plus AgeLoss · off the market16 mg
- Women's MultiNaturesPlus AgeLoss16 mg
- Women's MultipleRadiance Select5 mg
- Women's MultivitaminBodybuilding.com Foundation Series5 mg
- Women's MultivitaminEvlution Nutrition20 mg
- Women's Natural BalanceSeniorLife Health30 mg
- Women's Soy IsoflavonesCATALO50 mg
- Women's SupportVitabase30 mg
- Women's SupportNatures Craft · off the market30 mg
- Y CrampNatures Plus · off the market5 mg
- Y CrampNaturesPlus5 mg