Nattokinase
by Mental Refreshment · capsule · 200 capsules
- On the market (NIH)
- UPC 7 13807 37517 1
- DSLD label 247690
- Serving 1 capsule
- 200 servings
Nattokinase by Mental Refreshment lists one ingredient: 200 mg of nattokinase per serving of 1 capsule. Its current label entered the NIH Dietary Supplement Label Database on May 22, 2021.
What is in 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Nattokinaseas FibrinaseNattokinase (Form: Soybean Fibrinase extract) Note: Providing 4000 fibrinolytic units of activity per capsule | 200 mg | Higher than 91% of 141 products listing nattokinase (median 100 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 247690 (entered May 22, 2021), 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?
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 200 mg of nattokinase is higher than 91% of the 141 nattokinase products that print an amount; 2 list more.
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.
- Advanced Natto SupportNatures Nectar same ingredients
- Nattokinase 4,000 FU 200 mgDouble Wood Supplements same ingredients
- The Circulation SolutionHealth Resources same ingredients
- NattokinaseOL Olympian Labs same ingredients
- Nattokinase 100 mgThe Vitamin Shoppe same ingredients
- Nattokinase (as NSK-SD)Patient One 1 MediNutritionals same ingredients
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: For adults, take one (1) capsule with a meal or a glass of water.
- Warnings
- Warning: Do not use this product if you are taking anticoagulant blood thinning medications or have any condition associated with bleeding.
- Not intended for use by persons under the age of 18. Keep out of reach of children.
- Allergens and what it does not contain
- Contains No: Artificial coloring, artificial flavor, preservatives, yeast, corn, milk or milk derivatives, lactose, salt, sodium, soy, sugar, gluten, starch or wheat.
- Storage
- Store in a dry place and avoid excessive heat.
Source: label statements in DSLD label 247690.
What else is on the label?
Other ingredients: Gelatin, Rice powder.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Manufactured in a FDA Registered facility that conforms to GMP standards GMP Good Manufacturing Practice Consistent Quality.
How many labels does Nattokinase have?
One label is on file, entered on May 22, 2021.
- Label 247690 (current) Entered May 22, 2021 · on the market · 200 capsules · UPC 7 13807 37517 1
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Mental Refreshment Nutrition (manufacturer). All Mental Refreshment products.