Vitamin D3 with K2, Zinc, Boron and MCT Oil

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vitamin d3 k2 zinc citrate boron mct oil supplement uk
epsilon life vitamin d3 k2 zinc boron mct oil high strength capsules no artifical fillers
Vitamin D3 K2 Zinc Free Delivery

Vitamin D3 with K2, Zinc, Boron and MCT Oil

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Vitamin D3 K2 MK7 Zinc Ultra Absorb with No Artificial Fillers

Made in the UK to the highest standards, our Vitamin D3 K2 supplement is a top choice for anyone looking for a comprehensive and convenient way to boost their health.

Most vitamin D3 K2 supplements stop at two ingredients. This one combines five: D3, K2 (MK-7), zinc citrate, boron, and MCT oil, formulated so each nutrient supports the absorption or function of the others.

4000IU of vitamin D3 per capsule. 120 capsules. One-a-day. Four-month supply. Made in the UK to GMP and BRCGS standards.

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£20.00

vitami d3k2 zinc boron mct supplement high strength 4000iu vitamin d

Why D3 and K2 belong together

The NHS recommends all UK adults supplement with vitamin D from October to March. But vitamin D3 on its own only gets calcium into your bloodstream. It doesn’t control where that calcium ends up.

That’s where K2 comes in. Vitamin K2 activates osteocalcin, the protein that directs calcium into bones and teeth rather than soft tissue and arteries. Without adequate K2, the calcium that D3 helps you absorb may not reach where it’s most useful.

This formula uses K2 as MK-7, the longer-acting form that stays active in the body for up to 72 hours, compared with just a few hours for MK-4. It also includes MCT oil because both D3 and K2 are fat-soluble vitamins. Taking them alongside a fat source improves absorption, so you don’t need to worry about timing your capsule with a meal.

Research into the D3-K2 synergy has been published in journals including the European Journal of Clinical Nutrition and the Journal of Bone and Mineral Research, with findings suggesting the combination may support calcium metabolism more effectively than either vitamin taken alone.

epsilon life vitamin d3k2 ingredients zinc citrate boron mct oil no artificial fillers

What's in each capsule (and why)

Every ingredient in this vitamin D3 K2 supplement is here for a specific reason:

  • 4000IU Vitamin D3 (cholecalciferol, from lanolin) — the dose most commonly recommended by UK practitioners for adults with low or insufficient levels. Supports calcium absorption, immune function, and muscle health.
  • 90mcg Vitamin K2 (as MK-7) — directs calcium to bones and teeth. The MK-7 form has a longer half-life than MK-4, meaning one daily dose maintains consistent blood levels.
  • 5mg Zinc (as zinc citrate) — a highly bioavailable form. Zinc supports immune function and is involved in over 300 enzymatic processes in the body, including those related to bone metabolism.
  • 3mg Boron — a trace mineral that supports the metabolism of calcium, magnesium, and vitamin D. Often missing from standard D3 K2 supplements, yet research suggests it plays a role in how your body uses these nutrients.
  • MCT Oil — included as a fat source to improve absorption of the fat-soluble vitamins (D3 and K2) in the formula.

No magnesium stearate. No titanium dioxide. No synthetic fillers or artificial colours. HPMC capsule shell. Manufactured in the UK to GMP and BRCGS standards.

Frequently Asked Questions

Why does this supplement include zinc and boron?
Most vitamin D3 K2 supplements stop at two ingredients. We added zinc citrate because zinc is involved in over 300 enzymatic processes, including several related to bone metabolism and immune function. Boron supports how your body metabolises calcium, magnesium, and vitamin D. Research suggests boron helps maintain the activity of enzymes involved in vitamin D metabolism. Both are commonly under-consumed in typical UK diets, and both complement what D3 and K2 are already doing.
What is the difference between MK-7 and MK-4 vitamin K2?
MK-7 and MK-4 are two forms of vitamin K2. The main practical difference is how long they stay active. MK-4 has a half-life of a few hours, so blood levels drop quickly after a single dose. MK-7 stays active for up to 72 hours, which means one daily capsule maintains more consistent levels. This formula uses all-trans MK-7, the bioactive isomer. Some supplements use a mix of trans and cis isomers, but only the trans form is biologically active.
Do I need to take this with food?
It helps, but it is less critical with this formula than with most vitamin D supplements. D3 and K2 are fat-soluble, so they absorb better with dietary fat. We included MCT oil in the capsule specifically to provide that fat source, so you get improved absorption even without a fatty meal. That said, taking it alongside breakfast or lunch is still a good habit.
Is 4,000 IU of vitamin D safe to take daily?
4,000 IU is the tolerable upper intake level set by EFSA (European Food Safety Authority) for adults. It is not a megadose. The NHS recommends a minimum of 400 IU daily for all UK adults, and many practitioners recommend 1,000 to 4,000 IU for people with low or insufficient levels. If you have a specific medical condition or take medication that affects vitamin D metabolism, check with your GP before starting any supplement.
Can I take this alongside a magnesium supplement?
Yes. Magnesium is required for your body to activate vitamin D into its usable form. Taking magnesium and vitamin D together is well supported by research. If you are considering magnesium, a well-absorbed form like magnesium glycinate pairs well with this formula.
Can I take vitamin K2 if I’m on blood thinners?
If you take warfarin or another vitamin K-dependent anticoagulant, speak to your GP or pharmacist before using any supplement containing vitamin K2. Vitamin K2 can affect how these medications work. This does not apply to anticoagulants that work through different mechanisms (such as DOACs like apixaban or rivaroxaban), but it is always worth checking with your prescriber if you are unsure.


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