best vitamin k supplement

Vitamin K Supplements: Test & Reviews

Author: Anne Jonson

Diet & Nutrition Expert

Welcome to our big vitamin K test . Here we present you all of the vitamin K supplements we have tested. We have compiled detailed background information for you.

We want to make the purchase decision easier for you and help you find the best vitamin K for you.

You can also find answers to frequently asked questions in our guide. You will also some important information on this page that you should definitely pay attention to if you want to buy vitamin K.

Best Vitamin K Supplements

Best liposomal vitamin D3 + K2 liquid

This vitamin D3 + K2 preparation from sundt Supplements is a liquid, liposomal product. This means that the active ingredient is packaged in liposomes and thus protected.

In this way, it can be absorbed by your body better, faster and in larger quantities. The liposomal vitamin D3 + K2 can therefore fully support your bones and your immune system.

With the purchase you get a 60 ml bottle, which makes about 30 servings. The drops are gluten and sugar free. In addition, care was taken during production that no genetically modified ingredients were used.

Best vitamin K drops

The vitamin K2 (200µg MK-7) preparation available in the form of drops comes from natural elements. With 50 ml it contains a total of 1700 drops.

The daily dose is 10 drops. This product is also vegan, lactose and gluten free.

For optimal bioavailability, the drops are dissolved in MCT oil from coconut so that the fat-soluble vitamin K can be better absorbed by the body. The preparation from natural elements is also in the middle price segment.

Best vitamin K capsules

The vegan vitamin K2 tablets from Vitabay have an extremely high all-trans content of 99.99 percent.

The vitamin K2 formula contained is particularly suitable for allergy sufferers. Only certified raw materials are processed.

The vitamin K2 contained is obtained from the Japanese soy product Natto. Each tablet contains 200 mg of vitamin K2. The product is lactose and gluten free. The pack contains 120 tablets.

Vitamin K complex with most vitamins

The Vihado company also offers a vitamin K complex. Contains 100 capsules with vitamin K1 (100mcg), K2 (100mcg), calcium (400mcg) and vitamin D3 (5mcg).

The combination product is also vegan, lactose and gluten-free and free of additives such as magnesium stearate.

According to the manufacturer, the preparation has the highest quality and optimal bioavailability, which is also achieved by combining it with other vitamins and nutrients. The vitamin K complex from Vihado is in the lower price segment.

Questions to Consider Before Buying Vitamin K supplements

What is vitamin K and what can i use it for?

Vitamin K occurs naturally as vitamins K1 (phylloquinone) and K2 (menaquinone). Like vitamins A, D and E, it is one of the fat-soluble vitamins and is mainly essential for blood clotting.

In addition, vitamin K supports bone mineralization and thus inhibits bone loss in women after the menopause.

Furthermore, vitamin K prevents the build-up of calcium in the soft tissues such as cartilage and blood vessels, regulates cell processes and repair processes in the nerve cells, kidneys, eyes, blood vessels and in the liver.

How does vitamin K help me in connection with exercise?

Vitamin K is often forgotten, but is considered an all-round talent among vitamins. Since vitamin K plays a very important role in blood clotting, it ensures that we do not bleed to death in the event of injuries.

It also ensures that calcium is transported into the bones and that the metabolism of the connective tissue runs smoothly.

When it comes to connective tissue, women in particular tend to pay attention, as toning the body and anti-cellulite training are one of the most important things in sport for many.

It is also important that the cardiovascular system is supported by vitamin K preventing calcium from building up in the arteries.

Which food contains vitamin K?

You can find vitamin K mainly in green vegetables such as spinach, Brussels sprouts, or broccoli. Vitamin K is also found in algae and vegetable oils.

The body can absorb vitamin K2 better, but it is hardly available in our western foods. Eggs, meat and dairy products contain at least small amounts.

In the following we have shown you some foods and the amount of vitamin K they contain in a table.

Product Vitamin K content in micrograms (per 100g)
Broccoli
99 - 205
Cauliflower
5 - 300
Avocado
19
Lettuce
109
Parsley
360 - 790

How to dose vitamin K and how do I take it?

The daily requirement of vitamin K in newborns is 4 micrograms per day, from the 4th month the requirement increases to 10 micrograms.

For adults and pregnant women, the daily requirement is then 60-80 micrograms. As you can see in the table above, 50g Brussels sprouts or 150g quark in one day would be enough for adults.

A vitamin K deficiency can be prevented relatively easily through a balanced diet.

In general, with your diet, you probably ingest even 300 or 400 micrograms in a day. However, 90% of this is vitamin K1.

An excess of vitamin K does not cause any damage or other consequences. Only in newborns, an excess of vitamin K can lead to the breakdown of red blood cells.

Are there any side effects related to vitamin K?

The daily requirement of vitamin K in newborns is 4 micrograms per day, from the 4th month the requirement increases to 10 micrograms.

For adults and pregnant women, the daily requirement is then 60-80 micrograms. As you can see in the table above, 50g Brussels sprouts or 150g quark in one day would be enough for adults.

A vitamin K deficiency can be prevented relatively easily through a balanced diet.

In general, with your diet, you probably ingest even 300 or 400 micrograms in a day. However, 90% of this is vitamin K1.

An excess of vitamin K does not cause any damage or other consequences. Only in newborns, an excess of vitamin K can lead to the breakdown of red blood cells.

Neither in connection with the intake of vitamin K as a dietary supplement nor in the form of food have side effects in humans or animals.

Too much vitamin K should not be given to newborns, as red blood cells can break down.

However, there are some interactions with other drugs. These are the following:

Medication Effect Consequences
Anticoagulants
Inhibit blood clotting
Vitamin K reduces the effect or completely eliminates it
Antibiotics
Can decimate vitamin-producing bacteria
Can lead to vitamin K deficiency
Cholestyramines
Inhibit the absorption of cholesterol and fat-soluble vitamins
Can lead to vitamin K deficiency
Orlistat
Medicines used to treat obesity inhibit the absorption of fat-soluble vitamins
Can lead to vitamin K deficiency

What types of vitamin K supplements are there and which one is right for you?

Vitamin K1: Advantages & Disadvantages

Vitamin K1 (phylloquinone) is indispensable for photosynthesis in plants and is therefore found in many types of vegetables and fruits.

Green vegetables such as kale, spinach and parsley in particular contain a lot of vitamin K1.

It ensures normal blood clotting, protects blood vessels and other soft tissues from calcium deposits, and supports bones and teeth.

Vitamin K2: Advantages & Disadvantages

Vitamin K2 (menaquinone) is produced by bacteria such as E. coli. These bacteria also occur in the human intestine, so vitamin K2 can also be produced here in small quantities.

Otherwise we can also ingest it to a small extent via eggs, meat and dairy products.

ADVERTISEMENT

Vitamin K2 is considered a more active form of vitamin K, but otherwise has the same effects as K1. Since K2 is rarely found in our western foods, it makes sense to take K2 in addition to a dietary supplement.

Vitamin K3: Advantages & Disadvantages

Vitamin K3 is a synthetically produced form of vitamin K and is soluble in water.

Since it is toxic in certain amounts, this form has been banned for human consumption for some time. Therefore it is only mentioned here for a complete overview.

Purchase criteria: Use these factors to compare vitamin K supplements

In the following we will show you which aspects you can use to decide between the multitude of possible vitamin K supplements.

The criteria by which you can compare the preparations with one another include:

  • Dosage
  • Composition
  • Dosage form

Origin

If you want to buy a vitamin K product, the dosage naturally plays a role. In most cases, as already mentioned above, the daily requirement of K1 is covered by food.

Most of the preparations, however, are high-dose anyway and are therefore much higher than the daily requirement.

If you also want to use vitamin K for teenagers or children, you should make sure that the dosage is not too high.

Composition

Many nutritional supplements for vitamin K come in a combination of K1 and K2 or even with additional other vitamins and nutrients. However, there are also some who offer K2 individually, for example.

Here you have to decide for yourself whether you want a combination or really just a supplement with K2. If you eat very well-balanced, healthy and rich in vitamins, a single product may be enough.

Make sure, however, that you do not eat too low in fat, as vitamin K needs fats in order to be properly absorbed by the body.

Dosage form

Vitamin K is available in the form of tablets, capsules or drops. In theory, it doesn’t matter which form you choose, as it depends much more on the content and the dose, etc.

The advantage of capsules and drops, however, is that they already contain oil, which is useful for fat-soluble vitamins. So you can take them independently of meals.

If you opt for tablets, you can achieve the same effect if you simply take them with a meal (with fat).

Facts about Vitamin K

What are Fat Soluble Vitamins?

As mentioned above, vitamin K, like vitamins A, D and E, are fat-soluble vitamins. In contrast, there is the group of water-soluble vitamins.

In comparison, the fat-soluble vitamins have the advantage that they can be stored in the body.

Why should you give vitamin K to newborn babies?

Vitamin K is given to newborns as it reduces the risk of bleeding and damage to health from a lack of vitamin K.

At birth, the baby still has some vitamin K stored in its liver, but it is not yet clear how much could be absorbed.

Administration of vitamin K to newborns is generally considered a common prophylaxis. However, there is no obligation and more and more parents are skeptical.

ADVERTISEMENT