PlainVitamins

A form of vitamin K

Vitamin K1 (phylloquinone) supplements

1,879 vitamin K products in the NIH label database list vitamin K as vitamin K1 (phylloquinone) (40% of the 4,722 vitamin K products); their median is 80 mcg of vitamin K per serving, against 80 mcg across all vitamin K products; the 20 whose only supplement ingredient is vitamin K list a median of 100 mcg (DSLD version 9.4.0, January 2026).

How does vitamin K1 (phylloquinone) compare with the other forms?

The median amount of vitamin K per serving in products naming each form; the count in brackets. The amount is the vitamin K the label gives, as printed.

Median vitamin K per serving by form

Vitamin K by formVitamin K1 (phylloquinone)80 mcg (1,879)Vitamin K2 as MK-790 mcg (1,376)Vitamin K2 as MK-4100 mcg (277)
Vitamin K by formVitamin K1 (phylloquinone)80 mcg (1,879)Vitamin K2 as MK-790 mcg (1,376)Vitamin K2 as MK-4100 mcg (277)
Vitamin K by formVitamin K1 (phylloquinone)80 mcg (1,879)Vitamin K2 as MK-790 mcg (1,376)Vitamin K2 as MK-4100 mcg (277)
Vitamin K by formVitamin K1 (phylloquinone)80 mcg (1,879)Vitamin K2 as MK-790 mcg (1,376)Vitamin K2 as MK-4100 mcg (277)
Vitamin K by formVitamin K1 (phylloquinone)80 mcg (1,879)Vitamin K2 as MK-790 mcg (1,376)Vitamin K2 as MK-4100 mcg (277)

Source: Supplement Facts rows and their forms, NIH ODS Dietary Supplement Label Database version 9.4.0, current labels.

Products
1,8791,355 on the market
Median vitamin K per serving
80 mcgall vitamin K products: 80 mcg
Share of vitamin K products
40%1,879 of 4,722

What else do these products contain?

Ingredients most often listed alongside it, with the median amount in these products and in all products
IngredientShare of these productsMedian hereMedian, all products
Vitamin D96% 22.5 mcg15 mcg
Vitamin C90% 120 mg100 mg
Vitamin A89% 5,000 IU4,000 IU
Vitamin B1289% 32 mcg36 mcg
Vitamin B689% 6 mg6 mg
Zinc88% 15 mg11 mg
Folate88% 400 mcg400 mcg
Vitamin E87% 35 IU30 IU
Biotin86% 200 mcg200 mcg
Riboflavin86% 5 mg4 mg

Which products are they?

60 of the 1,879 (on-market products first, the newest label first), ordered by the amount of vitamin K per serving, largest first; an amount that looks like a slip or a compound's weight comes last, marked.

Source: NIH ODS Dietary Supplement Label Database version 9.4.0; the form each label names for its row. Daily Values: the FDA's Daily Value page.

Which brands make them?

Nature's Way (107), New Chapter (59), GNC Women's Ultra Mega (40), MegaFood (38), GNC Mega Men (37), Rainbow Light (34), Country Life (32), Vitamin World (28), Nature Made (28), Shaklee (26).

Where next?