PlainVitamins

NattoPlus

by Dr. Sinatra · capsule · 120 capsules

  • On the market (NIH)
  • UPC 6 78829 20119 1
  • DSLD label 201842
  • Serving 2 capsules
  • 60 servings

NattoPlus by Dr. Sinatra lists 8 ingredients, 6 with an amount per serving of 2 capsules, such as 258 mg of vitamin C, 50 mg of magnesium, 500 mg of L-arginine and 50 mg of nattokinase; 2 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on April 25, 2019.

What is in NattoPlus?

Each row as the label prints it, per serving of 2 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).

NattoPlus: Supplement Facts rows against the market (DSLD label 201842, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Magnesium AscorbateVitamin C (Form: as Magnesium Ascorbate)258 mg430%Vitamin C in NattoPlus against 18,583 products258 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg258 mg

Higher than 75% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 516 mg.

Magnesiumas Magnesium Ascorbate, Magnesium GlycinateMagnesium (Form: as Magnesium Ascorbate, Magnesium Glycinate)50 mg13%Magnesium in NattoPlus against 14,003 products50 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg50 mg

59% of 14,003 products listing magnesium give more (median 86 mg). Per day at the most servings: 100 mg.

L-Arginineas L-Arginine HydrochlorideL-Arginine (Form: as L-Arginine HCl)500 mgArginine in NattoPlus against 1,455 products500 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.500 mg

47% of 1,455 products listing arginine give more (median 500 mg). Per day at the most servings: 1,000 mg.

Nattokinaseas SoyNattokinase (Form: from Soy) (Alt. Name: NSK-SD)50 mgNattokinase in NattoPlus against 141 products50 mg per serving; the middle half of products list 50 mg to 100 mg, the median 100 mg.50 mg

67% of 141 products listing nattokinase give more (median 100 mg). Per day at the most servings: 100 mg.

Citrus Bioflavonoid Complex50 mgFlavonoid in NattoPlus against 2,343 products50 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.50 mg

46% of 2,343 products listing flavonoid give more (median 50 mg). Per day at the most servings: 100 mg.

Meriva Curcumin Phytosome50 mgCurcumin in NattoPlus against 550 products50 mg per serving; the middle half of products list 50 mg to 400 mg, the median 200 mg.50 mg

72% of 550 products listing curcumin give more (median 200 mg). Per day at the most servings: 100 mg.

Turmeric extractno amount given
Phosphatidylcholineas SoyPhosphatidylcholine (Form: from Soy)no amount given

Source: NIH ODS Dietary Supplement Label Database, label 201842 (entered April 25, 2019), 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 2 servings 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?

The products whose ingredient lists overlap most with NattoPlus's, rare ingredients counting for more.

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
Doctor’s Suggested Use: Take 2 capsules twice daily before morning and evening meals.
Warnings
Warning: Do not take this product if you take warfarin or other blood thinning products. Pregnant or lactating women should consult a health care professional before taking this product.
Keep out of reach of children.
Contains: Soy
Storage
To preserve quality and freshness, store bottle with cap tightly closed in a cool, dry place.

Source: label statements in DSLD label 201842.

What else is on the label?

Other ingredients: Gelatin, Microcrystalline Cellulose, Stearic Acid, Magnesium Stearate, Silicon Dioxide.

How many labels does NattoPlus have?

One label is on file, entered on April 25, 2019.

  1. Label 201842 (current) Entered April 25, 2019 · on the market · 120 capsules · UPC 6 78829 20119 1

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

Who makes it?

The label names Healthy Directions (distributor), Bethesda, MD. All Dr. Sinatra products.

Where next?