Best Nattokinase

by Doctor's Best · capsule · 30 veggie caps

  • On the market (NIH)
  • UPC 7 53950 00135 0
  • DSLD label 24619
  • Serving 1 to 2 capsules; amounts per 1 capsule
  • 30 servings

Best Nattokinase by Doctor's Best lists one ingredient: 2,000 FU of nattokinase per serving of 1 capsule. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2013.

What is in Best Nattokinase?

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

Best Nattokinase: Supplement Facts rows against the market (DSLD label 24619, January 2026 release)
IngredientAmount% DVAmong products listing it
NattokinaseNattokinase Note: (fibrinolytic units) enzyme activity2,000 FU

Source: NIH ODS Dietary Supplement Label Database, label 24619 (entered August 23, 2013), 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?

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 - 2 capsules daily, between meals.
Warnings
Contains Soy
Do not use this product if you are pregnant or nursing, are allergic to soy, or if you have a blood coagulation disorder. If you are taking an anticoagulant (bloodthinning medication) or vitamin K, consult a physician before taking this product.
Do not use this product if you are pregnant or nursing, are allergic to soy, or if you have a blood coagulation disorder.
Allergens and what it does not contain
Best Nattokinase contains nattokinase enzyme with Vitamin K2 removed.

Source: label statements in DSLD label 24619.

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(TM).

How many labels does Best Nattokinase have?

6 labels are on file under this name since August 23, 2013: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 65486 Entered October 22, 2016 · off the market December 22, 2016 · 90 veggie caps · UPC 7 53950 00125 1
  2. Label 62327 Entered July 25, 2016 · off the market October 20, 2017 · 270 veggie caps · UPC 7 53950 00253 1
  3. Label 43439 Entered March 25, 2015 · off the market May 2, 2016 · 90 veggie caps · UPC 7 53950 00125 1
  4. Label 24622 Entered August 23, 2013 · off the market May 2, 2016 · 270 veggie caps · UPC 7 53950 00253 1
  5. Label 24621 Entered August 23, 2013 · off the market March 10, 2015 · 90 veggie caps · UPC 7 53950 00125 1
  6. Label 24619 (current) Entered August 23, 2013 · on the market · 30 veggie caps · UPC 7 53950 00135 0

DSLD also links this label to: Nattokinase (package size difference, same product), Nattokinase 2,000 FUs (package size difference, same product), Nattokinase (package size difference, same product), Nattokinase 2,000 FUs (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), San Clemente, CA. All Doctor's Best products.

Where next?