Soy Isoflavones Extract
by 21st Century · capsule · 60 vegetarian capsules
- On the market (NIH)
- UPC 7 40985 22306 2
- DSLD label 258593
- Serving 2 vegetarian capsules
- 30 servings
Soy Isoflavones Extract by 21st Century lists one ingredient: 100 mg of soy isoflavones extract, powder per serving of 2 vegetarian capsules. Its current label entered the NIH Dietary Supplement Label Database on January 22, 2022.
What is in Soy Isoflavones Extract?
Each row as the label prints it, per serving of 2 vegetarian capsules. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Total Carbohydrate | less than 1 g | 1% | |
| Soy Isoflavones Extract, Powderas Soy Seed Extract, PowderStandardized to minimum 40% Isoflavones | 100 mg |
Source: NIH ODS Dietary Supplement Label Database, label 258593 (entered January 22, 2022), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
The products whose ingredient lists overlap most with Soy Isoflavones Extract's, rare ingredients counting for more.
- Soy IsoFlavonesEarthborn Elements 1 shared, 83% alike
- Non-GMO Soy IsoflavonesBluebonnet 1 shared, 83% alike
- Complete Balance - PM FormulaNatrol · off the market 1 shared, 38% alike
- PM FormulaNatrol 1 shared, 38% alike
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Directions: As an herbal supplement, adults take two (2) capsules daily with any meal or as directed by a healthcare provider. Do not exceed recommended dosage.
- Warnings
- Do not exceed recommended dosage.
- Warning: Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a medical procedure.
- Stop use and contact a physician if adverse reactions occur.
- Keep out of reach of children.
- Do not use if product appears to be tampered with or seal is broken.
- Contains soy.
- Allergens and what it does not contain
- No added sugar, salt, yeast, preservatives or artificial flavors.
- Gluten free
- Storage
- Store at room temperature.
Source: label statements in DSLD label 258593.
What else is on the label?
Other ingredients: Oat Fiber, Rice Bran, Cellulose, Silicon Dioxide, Magnesium Silicate, Magnesium Stearate.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Guaranteed quality Laboratory tested.
How many labels does Soy Isoflavones Extract have?
3 labels are on file under this name since July 25, 2012: other sizes, label designs and reformulations. The current one leads this page.
- Label 258593 (current) Entered January 22, 2022 · on the market · 60 vegetarian capsules · UPC 7 40985 22306 2
- Label 205862 Entered August 23, 2019 · off the market August 6, 2021 · 60 vegetarian capsules · UPC 7 40985 22306 2
- Label 11518 Entered July 25, 2012 · off the market June 28, 2019 · 60 vegetarian capsules · UPC 7 40985 22306 2
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names 21st Century HealthCare, Inc. (manufacturer), Tempe, AZ. All 21st Century products.