Vitamin K 2
by Signature Supplements · capsule · 100 capsules
- On the market (NIH)
- DSLD label 338979
- Serving 1 to 2 capsules; amounts per 2 capsules
- 50 servings
Vitamin K 2 by Signature Supplements lists 2 ingredients, 2 with an amount per serving of 2 capsules, such as 200 mcg of vitamin K2 and 200 mg of nattokinase. Its current label entered the NIH Dietary Supplement Label Database on August 22, 2025.
What is in Vitamin K 2?
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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin K2as Menaquinone-7 | 200 mcg | 150% | Higher than 91% of 4,607 products listing vitamin K (median 80 mcg). |
| Nattokinaseas Natto Extract | 200 mg | Higher than 91% of 141 products listing nattokinase (median 100 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 338979 (entered August 22, 2025), version 9.4.0. See the label on DSLD or its label image (PDF). 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 mcg of vitamin K is higher than 91% of the 4,607 vitamin K products that print an amount; 321 list more.
- 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?
1 product lists the very same ingredients; the nearest amounts come first.
- K-2 with NattokinaseSwanson same ingredients
- The Circulation SolutionHealth Resources 1 shared, 66% alike
- NattokinaseAN American Nutriceuticals 1 shared, 66% alike
- Nattokinase 50 mgBronson Laboratories 1 shared, 66% alike
- NattokinaseOL Olympian Labs 1 shared, 66% alike
- Nattokinase 50 mgVitamin World 1 shared, 66% 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
- Directions: For adults, take one (1) to two (2) capsules daily, preferably with a meal.
- Warnings
- Do not take this product within 2 hours of taking medications or follow the advice of your health care providers. Warning: Pregnant or lactating women should consult a doctor before using any product. Consult doctor before use if you have, or have had, kidney disease, if you are on a magnesium-restricted diet or if you are taking any medications or remedies such as those to treat high blood pressure, heart medications, muscle relaxants or diuretics.
- Discontinue use and consult your doctor if any adverse reactions occur, such as gastrointestinal discomfort or low blood pressure.
- Not intended for use by persons under the age of 18. Keep out of reach of children.
- Allergens and what it does not contain
- No: chemical fillers or binders, 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 338979.
What else is on the label?
Other ingredients: Cellulose, Diatomaceous.
How many labels does Vitamin K 2 have?
One label is on file, entered on August 22, 2025.
- Label 338979 (current) Entered August 22, 2025 · on the market · 100 capsules
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Signature Supplements (distributor), San Clemente, CA. All Signature Supplements products.