Nutrient label guide

Vitamin K on supplement labels

The NRV, a worked %NRV example, the authorised health claims and the dose advice for Vitamin K, in one place.

Vitamin K shown on a supplement label nutrient table
NRV75 µg
15% NRV (minimum for most claims)11.2 µg
Example ingredient formphylloquinone (K1) or menaquinone (K2)
Authorised claims (examples)2

Showing Vitamin K in the nutrient table

Give the amount of Vitamin K per daily dose, in µg, and the %NRV. A daily dose of 75 µg works out as 75 ÷ 75 × 100 = 100% NRV. Check other doses with our %NRV calculator.

The nutrient table names the nutrient. The ingredients list names the form used, such as phylloquinone (K1).

Is there a maximum dose?

The UK has no legal maximum for Vitamin K in food supplements. The Department of Health and Social Care advice, published on the NHS website, is: 1 mg (1,000 µg) or less a day from supplements is unlikely to cause harm.

Authorised health claims

These are examples of authorised claims on the GB nutrition and health claims register. Use them word for word or with wording that means exactly the same, and only when the daily dose provides at least 15% of the NRV (11.2 µg).

  • “Vitamin K contributes to normal blood clotting”
  • “Vitamin K contributes to the maintenance of normal bones”

Check the full register entry before you print: some claims have extra conditions. See our health claims guide and how to check a claim on the register.

Labelling notes

Vitamin K affects blood clotting, so many brands add advice for people taking anticoagulant medicines such as warfarin to speak to their doctor.

Check before you print. Claims and dose advice are summarised from the GB nutrition and health claims register and the NHS vitamins and minerals pages, as of October 2026. Confirm your final wording against the register.

Vitamin K questions

What is the NRV for Vitamin K?

The Nutrient Reference Value for Vitamin K is 75 µg a day.

How much Vitamin K is needed for a health claim?

Usually at least 15% of the NRV per daily dose, which is 11.2 µg.

Is there a maximum dose for Vitamin K in UK supplements?

There is no legal maximum. The government advice is: 1 mg (1,000 µg) or less a day from supplements is unlikely to cause harm.

Want us to check your nutrient table?

Send your label with a quote request and we’ll check every amount, unit and %NRV.

Get a quote