Natto-Serra
by Doctor's Best · capsule · 90 veggie caps
- On the market (NIH)
- UPC 7 53950 00294 4
- DSLD label 82255
- Serving 1 veggie capsule
- 90 servings
Natto-Serra by Doctor's Best lists 3 ingredients, 1 with an amount per serving of 1 veggie capsule, such as 25 mg of calcium; 2 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on January 25, 2018.
What is in Natto-Serra?
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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Calciumas SerratericCalcium (Form: from Serrateric) | 25 mg | 2% | 88% of 17,831 products listing calcium give more (median 115 mg). |
| SerrapeptaseSerrapeptase Enzyme Note: (serratiopeptidase activity units) (40,000 SPU) | no amount given | ||
| NattokinaseNattokinase Note: (fibrinolytic activity units) (2,000 FU) | no amount given |
Source: NIH ODS Dietary Supplement Label Database, label 82255 (entered January 25, 2018), 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; 2 ingredients sit 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?
1 product lists the very same ingredients; the nearest amounts come first.
- Natto-Serra (Nattokinase-Serrapeptase)Doctor's Best same ingredients
- Best Natto-SerraDoctor's Best · off the market 2 shared, 87% alike
- Nattokinase SerrapeptaseSolaray · off the market 2 shared, 87% alike
- SerranatAbsonutrix 2 shared, 87% alike
- Nattokinase Serrapeptase Enteric CoatedSolaray 2 shared, 87% alike
- Nattokinase PlusDaVinci Laboratories of Vermont · off the market 2 shared, 67% alike
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 without food, or as recommened 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
- This Nattokinase is free of vitamin K.
- Non-GMO / Gluten free / Vegan
- Storage
- Store in a cool dry place.
Source: label statements in DSLD label 82255.
What else is on the label?
Other ingredients: Serrateric, Modified Cellulose.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Vegan.
How many labels does Natto-Serra have?
2 labels are on file under this name since January 25, 2018: other sizes, label designs and reformulations. The current one leads this page.
- Label 209462 Entered November 21, 2019 · off the market December 16, 2022 · 90 veggie caps · UPC 7 53950 00294 4
- Label 82255 (current) Entered January 25, 2018 · on the market · 90 veggie caps · UPC 7 53950 00294 4
DSLD also links this label to: Best Natto-Serra (image difference, same product), Best Natto-Serra (image difference, same product), Natto-Serra (Nattokinase-Serrapeptase) (image 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.