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  • Supplement package labeled Vitamin D3+K2 on a beige background
  • A white supplement bottle labeled NutriQuarter Vitamin D3+K2 K2 (MK-7) 90 capsules stands on a windowsill with a blurred winter cityscape outside. Large text on the left reads, 'Winter sun isn't enough.
  • A white supplement bottle labeled NutriQuarter Vitamin D3+K2 stands beside a beige bone prop on a stone surface, with large text explaining the role of D3 and K2 in calcium and bone health.
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  • A white supplement bottle labeled NutriQuarter Vitamin D3+K2 K2 (MK-7) 90 capsules, shown beside a beige informational table with nutritional information per capsule on a warm beige background.
  • A white supplement bottle labeled NutriQuarter Vitamin D3+K2 K2 (MK-7) stands on a stone surface beside a small 90-day calendar. Large promotional text reads, 'Your next 90 days, sorted.
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Vitamin D3 & K2

Vitamin D3 & K2

The UK doesn't get enough sun for vitamin D half the year. Supports your immune system and bones, with K2 added.

3000IU D3
100µg K2 MK-7
3 month supply
🇬🇧 Made in the UK
GMP CERTIFIED GMP Certified
BRC BRC Accredited

Nutritional Information

1 capsule typically provides:

Vitamin D3 75µg 3000iu (1500 %NRV*)
Vitamin K2 100µg (133 %NRV*)

*Nutrient Reference Value

Ingredients: Bulking Agent: Microcrystalline Cellulose, Capsule Shell: (Hydroxypropyl Methylcellulose), Vitamin D3 Prep (Acacia Gum, Sugar Cane, Sunflower Oil, Starch, Cholecalciferol), Vitamin K2 Prep (Dicalcium Phosphate, Vitamin K as MK7), Anti-Caking Agents (Magnesium Stearate, Silicon Dioxide).

Allergy Advice: Although rigorous precautions are taken to prevent any cross-contamination, this product is manufactured in a facility that handles allergy-based materials.

Part of the Daily Essentials

Feel better, function better, every day. The three nutrients your body needs most and rarely gets enough of.

Vitamin D3 & K2 Pure Krill Oil (Superba 2®) Magnesium Complex
Three NutriQuarter supplement containers on a beige background with 'Daily Essentials' text.

Daily Essentials

£45.97 £36.78 19% off
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The Power Of Vitamin D3 & K2

Vitamin D3 & K2
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Why You’ll Love It

Vitamin D contributes to the normal function of the immune system and the maintenance of normal bones, with vitamin K2 (MK-7) added, which also contributes to the maintenance of normal bones.
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What It Supports

Vitamin D also contributes to the maintenance of normal muscle function and teeth, and to normal absorption of calcium. Vitamin K contributes to normal blood clotting.
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What’s Inside

3000 IU Vitamin D3 with 100µg Vitamin K2 (as MK7) per capsule. UK-made, GMP and BRC certified.
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How To Use It

1 cap daily, first meal containing fat, that's what makes it absorb properly.

Why Vitamin D3 & K2?

UK sunlight

Limited sunlight for much of the year

From around October to early March, sunlight in the UK doesn't contain enough UVB for your skin to make vitamin D. Government guidance is to consider a daily vitamin D supplement through autumn and winter.

Vitamin D

What vitamin D contributes to

Vitamin D contributes to the normal function of the immune system and the maintenance of normal bones, teeth and muscle function.

75µg

D3 and K2 in one capsule

Each capsule provides 75µg (3000IU) of vitamin D3 and 100µg of vitamin K2 as MK-7. Vitamin D also contributes to normal absorption and utilisation of calcium and phosphorus.

Benefits Of Daily Use

Immune Function

Vitamin D contributes to the normal function of the immune system.

Bones & Muscles

Vitamin D contributes to the maintenance of normal bones and normal muscle function.

Vitamin K2

Vitamin K contributes to the maintenance of normal bones and to normal blood clotting.

UK Sunlight

Between October and early March there isn't enough UVB sunlight in the UK for your skin to make vitamin D.

Vitamin D3 & K2
Why Choose NutriQuarter?
High-Strength 3000 IU D3 + 100 µg K2
Added K2 (MK-7) alongside D3
GMP & BRC Certified Manufacturing
UK-Made & Quality Assured

Frequently Asked Questions

Why does this combine D3 and K2?

Vitamin D3 contributes to normal absorption and utilisation of calcium and to the maintenance of normal bones. Vitamin K2 (as MK-7) also contributes to the maintenance of normal bones. This formula combines the two in one capsule.

Why MK-7 and not MK-4?

MK-7 is a longer-acting form of vitamin K2 than MK-4, which suits a once-daily capsule.

How many capsules per day?

Adults, take 1 capsule daily. Do not exceed the recommended daily dose. D3 and K2 are both fat-soluble, so taking them with a meal that contains some fat is best.

How much vitamin D3 is in each capsule?

Each capsule provides 75µg (3000IU) of vitamin D3, 1500% of the Nutrient Reference Value. The safe upper limit for adults is 100µg (4000IU) a day from all sources, so do not exceed the recommended daily dose.

Is this suitable for vegans?

This product is suitable for vegetarians. The capsule shell is plant-based HPMC, but the D3 (cholecalciferol) is derived from lanolin, which means it is not suitable for vegans.

How long should I take it?

Vitamin D is stored in the body, so it's taken daily as part of your routine, particularly through autumn and winter when UK sunlight is limited.

The NutriQuarter Standard

What does “science-backed” actually mean?

Anyone can put those words on a product page. Here’s what they mean for our Vitamin D3 & K2, and where you can check the evidence yourself.

The Ingredient

Vitamin D3 plus K2 (MK-7)

Vitamin K2 as MK-7 contributes to the maintenance of normal bones, alongside vitamin D3, which is why the two are paired in one capsule.

The Dose

75µg D3 (1500% NRV) + 100µg K2

A 2017 meta-analysis of 25 randomised trials, over 11,000 people, examined vitamin D supplementation and acute respiratory infections. K2 as MK-7 is a long-acting form, staying active in the body for longer than MK-4.

The Formula

MK-7, the long-acting form of K2

MK-7 stays active in the body far longer than MK-4, the form used in many budget K2 products.

Don’t just take our word for it.

Read the authorised claim, review the research, and check the product specification.

View research
What we’re not claiming: Won't treat a diagnosed bone or heart condition. The research on vitamin D has mostly been in people who started out low in it, so if you're already topped up, don't expect fireworks.