PlainVitamins

Ultra Soy Extract

by Life Extension · capsule · 60 vegetarian capsules

  • On the market (NIH)
  • UPC 7 37870 10976 1
  • DSLD label 328758
  • Serving 1 vegetarian capsule
  • 60 servings

Ultra Soy Extract by Life Extension lists 4 ingredients, 4 with an amount per serving of 1 vegetarian capsule, such as 625 mg of soybean seed extract. Its current label entered the NIH Dietary Supplement Label Database on May 21, 2025.

What is in Ultra Soy Extract?

Each row as the label prints it, per serving of 1 vegetarian capsule. 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).

Ultra Soy Extract: Supplement Facts rows against the market (DSLD label 328758, January 2026 release)
IngredientAmount% DVAmong products listing it
Soybean Seed Extract625 mgSoy in Ultra Soy Extract against 250 products625 mg per serving; the middle half of products list 60 mg to 426.25 mg, the median 125 mg.625 mg

Higher than 79% of 250 products listing soy (median 125 mg). Per day at the most servings: 1,250 mg.

Total Isoflavonestd. to 40%, providing250 mgIsoflavones in Ultra Soy Extract against 290 products250 mg per serving; the middle half of products list 25 mg to 80 mg, the median 50 mg.250 mg

Higher than 93% of 290 products listing isoflavones (median 50 mg). Per day at the most servings: 500 mg.

Genistein15%93.75 mgGenistein in Ultra Soy Extract against 62 products93.75 mg per serving; the middle half of products list 8.13 mg to 30 mg, the median 24.2 mg.93.75 mg

Higher than 94% of 62 products listing genistein (median 24.2 mg). Per day at the most servings: 187.5 mg.

Daidzen14%87.5 mgDaidzein in Ultra Soy Extract against 32 products87.5 mg per serving; the middle half of products list 9.75 mg to 35 mg, the median 19.13 mg.87.5 mg

Higher than 97% of 32 products listing daidzein (median 19.13 mg). Per day at the most servings: 175 mg.

Source: NIH ODS Dietary Supplement Label Database, label 328758 (entered May 21, 2025), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 250 mg of total isoflavone (filed by NIH under isoflavones) is higher than 93% of the 290 isoflavones products that print an amount; 18 list more.
  • Its 93.75 mg of genistein is higher than 94% of the 62 genistein products that print an amount; 3 list more.
  • Its 87.5 mg of daidzen (filed by NIH under daidzein) is higher than 97% of the 32 daidzein products that print an amount.

The NIH database records 1 to 2 servings 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 Ultra Soy Extract's, rare ingredients counting for more.

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: Take one (1) capsule once or twice daily, or as recommended by a healthcare practitioner.
Warnings
Read the entire label and follow the directions carefully.
Caution: Consult with your healthcare practitioner if you have, or have a history of estrogen-dependent tumors.
Warnings: Keep out of reach of children.
Do not exceed recommended dose. Do not purchase if outer seal is damaged.
Consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
Contains soybeans.
To report a serious adverse event or obtain product information, contact 1-866-280-2852.
Allergens and what it does not contain
Gluten free Non GMO Le certified
Storage
Store tightly closed in a cool, dry place.

Source: label statements in DSLD label 328758.

What else is on the label?

Other ingredients: Cellulose, Rice Flour, Silica, Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Non GMO Le certified.

How many labels does Ultra Soy Extract have?

3 labels are on file under this name since April 22, 2016: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 328758 (current) Entered May 21, 2025 · on the market · 60 vegetarian capsules · UPC 7 37870 10976 1
  2. Label 231714 Entered August 23, 2020 · on the market · 150 vegetarian capsules · UPC 7 37870 10976 1
  3. Label 59074 Entered April 22, 2016 · off the market July 14, 2020 · 150 vegetarian capsules · UPC 7 37870 10976 1

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Quality Supplements and Vitamins, Inc. (distributor), Ft. Lauderdale, FL. All Life Extension products.

Where next?