PlainVitamins

Soy Isoflavones 50 mg

by Natrol · capsule · 120 capsules

  • On the market (NIH)
  • UPC 0 47469 03013 1
  • DSLD label 338993
  • Serving 5 capsules
  • 24 servings

Soy Isoflavones 50 mg by Natrol lists one ingredient: 50 mg of total isoflavones per serving of 5 capsules. Its current label entered the NIH Dietary Supplement Label Database on August 22, 2025.

What is in Soy Isoflavones 50 mg?

Each row as the label prints it, per serving of 5 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).

Soy Isoflavones 50 mg: Supplement Facts rows against the market (DSLD label 338993, January 2026 release)
IngredientAmount% DVAmong products listing it
Total Isoflavonesas Soy Extract50 mgIsoflavones in Soy Isoflavones 50 mg against 290 products50 mg per serving; the middle half of products list 25 mg to 80 mg, the median 50 mg.50 mg

39% of 290 products listing isoflavones give more (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 338993 (entered August 22, 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?

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?

6 products list the very same ingredients; the nearest amounts come first.

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 5 capsules, one time daily, with a meal.
Warnings
Warning: Consult your healthcare professional prior to use if you have or suspect a medical condition, or are taking prescription drugs, or are pregnant or lactating.
Keep out of reach of children.
Contains: Soy
Allergens and what it does not contain
No: Milk, Egg, Fish, Crustacean Shellfish, Tree Nuts, Peanuts, Wheat, Yeast, Artificial Colors or Flavors, Added Sugar or Preservatives Made from non-GMO soy
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 338993.

What else is on the label?

Other ingredients: Rice, Powder, Gelatin, Magnesium Stearate.

How many labels does Soy Isoflavones 50 mg have?

5 labels are on file under this name since May 28, 2019: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 338993 (current) Entered August 22, 2025 · on the market · 120 capsules · UPC 0 47469 03013 1
  2. Label 230646 Entered July 23, 2020 · on the market · 60 capsules · UPC 0 47469 00925 0
  3. Label 230577 Entered July 23, 2020 · on the market · 120 capsules · UPC 0 47469 03013 1
  4. Label 202959 Entered July 24, 2019 · off the market May 18, 2020 · 60 capsules · UPC 0 47469 00925 0
  5. Label 203003 Entered May 28, 2019 · off the market May 18, 2020 · 120 capsules · UPC 0 47469 03013 1

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

Who makes it?

The label names Natrol, LLC. (distributor), Chatsworth, CA. All Natrol products.

Where next?