bioline supplements - vitamin k

Vitamin K: an ally for the bones

There vitamin K it is a fat-soluble vitamin that performs important functions both as regards the bone structure and as regards blood coagulation. This article will provide you with useful information and advice on this precious ally of metabolism.

Vitamin K - Forms

Although it has now entered the terminology of common use, the wording vitamin K is not entirely correct, it would be more correct to define vitamin K as a group of vitamers. Vitamers are chemical compounds that differ in structure but share the same vitamin activity.

In the present case, for example, vitamin K is divided into three vitamers:

  • there vitamin K1, which also takes the name of philoquinone;

  • there vitamin K2, also called menaquinone;

  • there vitamin K3 or menadione.

Each of these proteins has very specific characteristics that contribute in different ways to maintaining the health of the organism.

Vitamin K - What it is for

Each vitamero deals with specific tasks:

  • there vitamin K1, of vegetable origin, promotes blood coagulation and is the most common vitamin and used in diets as a food supplement;

  • there vitamin K2, of bacterial origin, is the only one that possesses the properties necessary for the activation of osteocalcin, a fundamental protein to bind calcium to the bones and thus strengthen the bone structure and promotes the activation of the Matrix Gla Protein (MPG), a protein that promotes blood circulation;

  • there vitamin K3 it is of artificial origin, in fact it is produced in the laboratory specifically for food supplementation and helps regulate blood coagulation.

Vitamin K - Where it is found

Present in a wide variety of foods, from vegetables to meat, from dairy products to fruit, the vitamin K has the highest concentrations in green leafy vegetables, such as spinach, broccoli and turnip greens.

This table shows the foods with the highest intake of vitamin K and the relative percentage of vitamin K per 100 grams:


Vitamin K / 100g

Dried basil

1714 µg


1714 µg


1714 µg


1640 µg

Dried coriander

1359 µg


817 µg


622 µg


254 µg

Chili pepper

107 µg

Olive oil

60 µg


47 µg


31 µg


20 µg


15 µg


13 µg


13 µg

Vitamin K2 - dosage and deficiency

The body's request for vitamin K it is relatively modest, it is present in a great variety of foods and can even be synthesized in the intestine. However, cases of deficiency of vitamin K and it is therefore essential to know the correct contribution that the body requires and what are the symptoms of the deficiency vitamin K.

Normally the recommended intake of vitamin K is 1 µg / kg of body weight but the dosage may vary according to the metabolism and according to specific diseases or conditions.

Specifically, some risk factors include:

  • chronic kidney disease

  • cystic fibrosis

  • alcoholism

  • anorexia

  • genetic defect of the protein

  • disorders of the gastrointestinal system

  • taking broad-spectrum antibiotics

  • dysfunctions of the maternal placenta

The effects of a shortage of vitamin K they initially manifest themselves with an increase in blood clotting times and a weakening of the bones and can lead over time to real bleeding and cases of osteoporosis.

Vitamin K - contraindications

Excessive intake of vitamin K2 and K1 does not constitute a danger as no cases of toxicity have ever been reported, so much so that there is no maximum tolerable level of intake (UL). As for the vitamin K3Instead, it should not be taken in too high dosages because it can cause, for example, allergic reactions or intoxication of liver cells.

Vitamin K2 - supplements

If so far the subject of the discussion has been the vitamin K in its most general sense, we now turn our attention to vitamin K supplement food and, in particular, on vitamin K2. Summarizing what has been said in the previous lines, although the need for vitamin K2 in the body is limited, the use of supplements of vitamin K2 Bioline are recommended to all those who want to strengthen their bones and promote blood clotting, both in sports and not.

The vitamin K supplements tablets Bioline, in fact, contain the vitamin K3 MK-7 which, in addition to producing the osteocalcin essential for strengthening calcium in the bones, it has numerous beneficial preventive effects. Some of which are:

  • prevention of osteoporosis;

  • prevention of calcium build-up in arteries and valves;

  • removal of dental tartar, preventing tooth decay and diseases;

  • anti-inflammatory action;

  • antioxidant action.

Another aspect that deserves to be mentioned concerns the interaction between vitamin K2 supplements and vitamin D supplements. In fact, it is possible to take the two substances at the same time without competing, on the contrary vitamins K2 and D work together, helping to keep the bones in optimal condition.

To conclude, some Bioline Supplements products based on vitamin K2 are listed below:

Bioline Integratori