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Vitamins D3 4000IU + K2 100mcg (with MCT) D3 + K2 in MCT oil

Health Essentials · 60 softgels · 1 a day

Vitamins
D3+K2

1 softgel a day = 4000 IU of D3 + 100 µg of K2 (MK-7), already dissolved in MCT oil.

4.8 56 reviews
«To make it even more perfect, it just needed a source of fat. Other than that, excellent product.»
João M. · 4 stars · verified purchase · Apr 2025

Done. Now in MCT oil.

Pre-order−20 %

Ships by Friday 13 November.

Regular price: 13,99 €

25,17 € 33,57 € Save 8,40 €

≈ 0,14 € a day · 8,39 € per jar · 6 months

PRE-ORDER · 25,17 €
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Fat-soluble vitamin

Vitamin D doesn’t dissolve in water. It dissolves in fat.

Two glasses: in water, vitamin D stays in grains at the surface and the bottom; in oil, it dissolves evenly.
In waterIt stays in grains. It won’t mix.
In fatIt dissolves completely.

That’s why you’re told to take it with a meal. Your gut absorbs vitamin D together with fat. If the fat isn’t there, it absorbs less.

+32 %

more vitamin D3 in the blood at its peak when the same dose was taken with a meal containing fat instead of a fat-free meal.

Dawson-Hughes et al. · Journal of the Academy of Nutrition and Dietetics · 2015 · 50 adults See the study

And yet many vitamin D capsules are dry powder.

What we changed

Ours was powder too.
We changed it.

The old capsule mixed D3 and K2 with cellulose, stearic acid and silicon dioxide. The fat had to come from your plate. In the new softgel, both vitamins come already dissolved in oil.

Before · capsuleNow · softgel

D3 and K2

Mixed into dry powder

Dissolved in MCT oil

What comes with them

Cellulose, stearic acid and silicon dioxide

MCT oil, gelatin and glycerin

Seal

Two halves pushed together

Sealed in one piece

Dose

4000 IU + 100 µg

4000 IU + 100 µg

Who asked for it

«To make it even more perfect, it just needed a source of fat.»
João M. · 4 stars · verified purchase · Apr 2025
«Shame it isn’t encapsulated with a fat-soluble ingredient, but with silicon dioxide.»
Andreia L. · 4 stars · verified purchase · Sep 2025

They were right. It’s done.

The fat we chose

MCT oil.
The cleanest fat there is.

Medium-chain triglycerides. A simple fat that doesn’t spoil the vitamin it carries.

Gelatin capsule and glycerin MCT oil with D3 and K2 dissolved

It doesn’t go rancid.

It’s a saturated fat: it has none of the double bonds oxygen attacks. That makes it one of the most stable fats there is.

It tastes of nothing.

No smell, no taste. Swallow it and forget it.

No fillers.

No cellulose, no anti-caking agents. Just the oil, the two vitamins and the capsule.

Sealed in one piece.

The gelatin capsule closes the oil in completely. Air stays out.

The oil protects. The meal completes.

MCT keeps D3 and K2 dissolved and protected. The meal completes the absorption: take the softgel with lunch or dinner.

The duo

D3 helps your body absorb calcium. K2 helps maintain normal bones.

Vitamin D32000% NRV

4000 IU · 100 µg

Cholecalciferol, the same form your skin makes in the sun.

What it does

  • Contributes to normal absorption/utilisation of calcium and phosphorus.
  • Contributes to the maintenance of normal bones and teeth.
  • Contributes to the maintenance of normal muscle function.
  • Contributes to the normal function of the immune system.
Vitamin K2133% NRV

100 µg · MK-7

Menaquinone-7, made by fermentation. It stays in the blood for days, not hours.

What it does

  • Contributes to the maintenance of normal bones.
  • Contributes to normal blood clotting.

4000 IU is the maximum daily amount EFSA sets as tolerable for adults. So it’s 1 softgel a day, no more.

People who take it

Once they start, they keep going.

4.856 reviews
On blood tests

“My levels went up from 25 to 40 after 2 months. 100% recommend.”

EduardoVerified purchase
On the dose

“4000 IU is perfect, other brands use doses that are far too low.”

Ana P.Verified purchase
On the habit

“Vitamin D3 is life, I always take it with lunch.”

Carina C.Verified purchase

Reviews of the capsule version. The dose is the same.

See all 56 reviews

INSYGMA / REAL EXPERIENCES

Your experience.
Straight up.

Every experience adds a perspective. Here is what those who chose us have to say.

Review my purchaseFor customers who purchased

4.8/ 5

56 reviews

Rating distribution
5 43 4 13 3 0 2 0 1 0
How we verify reviews

New submissions require an eligible purchase, confirmed through an invitation or account. The same moderation rules apply to every rating. Averages and stars come from published WooCommerce reviews. Older reviews may include purchases that have not been verified. Any incentive is disclosed and does not depend on the rating. INSYGMA confirms the purchase.

eduardoVerified purchase

My levels went from 25 to 40 after 2 months. I recommend it 100%

Valdirene de Fatima da SilvaVerified purchase

this is the only one I use now my levels went up a bit in 2 months of use

Andreia limeira LimeiraVerified purchase

I expect it to be a good product. Shame it isn’t encapsulated with a fat-soluble ingredient but with silicon dioxide (even in a small amount, but along with other supplements it can already have some effect). But only after the test results will I be able to give a proper assessment.

Brayner AlvesVerified purchase

After 2 months of supplementing my levels went up to 55, I really recommend it

Valdirene de Fatima da SilvaVerified purchase

I recommend

Carina CardosoVerified purchase

vitamin d3 is life, I always take it with lunch

6 of 56 reviews

How to take it

One softgel, with a meal.

The oil comes in the softgel. The meal does the rest.

  1. WhenWith lunch or dinner

    With your fattiest meal of the day. Never on an empty stomach.

  2. How much1 softgel a day

    You don’t need more. 4000 IU is already the maximum tolerable daily intake for adults.

  3. Why every dayWinter sun isn’t enough

    Even in sunny Portugal, 66% of adults have vitamin D below 20 ng/mL, especially in winter blood tests.

    Duarte et al. · Archives of Osteoporosis · 2020

  4. How long it lasts60 softgels, 2 months

    3 jars take you from October to March.

Full transparency

Inside each softgel

Vitamin D34 mg of vitamin D3 oil
100 µg · 4000 IU2000% NRV
Vitamin K2 (MK-7)66.7 mg of vitamin K2 oil, made by fermentation
100 µg133% NRV
Other ingredients

Medium-chain triglycerides (MCT oil), gelatin, glycerin.

NRV: nutrient reference value (Reg. EU 1169/2011).
  • In MCT oil
  • No cellulose
  • No silicon dioxide
  • 1 a day

Frequently asked questions

Questions? We answer.

Why does vitamin D need fat?

It’s fat-soluble: it dissolves in fat and is absorbed in the gut together with it. In a trial with 50 adults, the same dose taken with a meal containing fat gave a 32% higher peak of vitamin D3 in the blood than with a fat-free meal.

If the softgel already has oil, do I still need to eat?

Yes. The MCT oil keeps D3 and K2 dissolved and protected until you swallow them. The meal does the rest: it’s what gets your gut absorbing fat. Take it with lunch or dinner.

Isn’t 4000 IU too much?

It’s the maximum daily amount EFSA sets as tolerable for adults (100 µg). That’s why it’s 1 softgel a day. If you already take another supplement with vitamin D, add the doses together.

Can I take it all the time? Should I take breaks?

You can take it all the time. No breaks needed. 4000 IU is the maximum EFSA considers safe to take every day, long term. Vitamin D doesn’t work in cycles: what matters is keeping your levels steady, and winter is when they drop the most. If you want to keep track, a vitamin D blood test (25(OH)D) shows where you are.

I take blood thinners. Can I take it?

Talk to your doctor first. Vitamin K interacts with anticoagulants such as warfarin and acenocoumarol.

Is it vegan?

No. The capsule is made of gelatin.

When will it arrive?

Mainland Portugal: 24h. Spain: 24 to 48h. Rest of Europe: 3 to 5 working days. Delivery time and shipping follow the destination country, not the page language.

The best-value pack

A whole winter of D3.
25,17 €.

3 jars · 1 softgel a day
+ Shipping costs · Ships by 13 Nov

About 0,14 € a day.

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