Nattokinase

by Doctor's Best · capsule · 270 veggie caps

  • On the market (NIH)
  • UPC 7 53950 00253 1
  • DSLD label 82020
  • Serving 1 veggie capsule
  • 270 servings

Nattokinase by Doctor's Best lists one ingredient: nattokinase, without an amount per serving of 1 veggie capsule. Its current label entered the NIH Dietary Supplement Label Database on December 22, 2017.

What is in Nattokinase?

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

Nattokinase: Supplement Facts rows against the market (DSLD label 82020, January 2026 release)
IngredientAmount% DVAmong products listing it
NattokinaseNattokinase Note: (enzyme activity in fibrinolytic units) (2,000 FU)no amount given

Source: NIH ODS Dietary Supplement Label Database, label 82020 (entered December 22, 2017), 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; 1 ingredient sits inside a blend, so their amounts cannot be compared.

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
Suggested Adult Use: Take 1 capsule daily, between meals, or as recommended by a nutritionally-informed physician.
Warnings
Contains soy
Warning: Do not use this product if you are pregnant or nursing, are allergic to soy, or if you are taking blood-thinning medication, consult a physician before taking this product.
Allergens and what it does not contain
Doctor’s Best Nattokinase contains nattokinase enzyme with Vitamin K2 removed.
Non-GMO / Gluten Free / Vegan
Storage
Store in a cool dry place.

Source: label statements in DSLD label 82020.

What else is on the label?

Other ingredients: Modified Cellulose, Maltodextrin, Magnesium Stearate.

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

How many labels does Nattokinase have?

2 labels are on file under this name since June 24, 2016: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 82020 (current) Entered December 22, 2017 · on the market · 270 veggie caps · UPC 7 53950 00253 1
  2. Label 62326 Entered June 24, 2016 · off the market October 20, 2017 · 90 veggie caps · UPC 7 53950 00125 1

DSLD also links this label to: Best Nattokinase (package size difference, same product), Best Nattokinase (package size difference, same product), Best Nattokinase (image difference, same product), Best Nattokinase (package size difference, same product), Best Nattokinase (package size difference, same product), Best Nattokinase (image difference, same product), Best Nattokinase (package size difference, same product), Best Nattokinase (package size difference, same product).

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

Who makes it?

The label names Doctor's Best, Inc. (distributor), California. All Doctor's Best products.

Where next?