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Cholecalciferol, or vitamin D3, is an organic chemical that belongs to the family of D vitamins. It is naturally found in fatty fish, fish oil, egg yolks, milk and dairy products. It is also synthesized in the human body. It is formed from 7-dehydrocholesterol present in the keratinocytes of the spinous and the basal layers of the epidermis, and a pre-requisite for initiating this process is the action of 290-315 nm wavelength UVB radiation on the skin.

Cholecalciferol is a biologically inactive compound. In the body, it undergoes enzymatic hydroxylation – first in the liver, with the participation of 25-hydroxylase, when calcidiol is formed and secondly in the kidneys, where under the influence of 1-α-hydroxylase, calcidiol is converted into the final active form – calcitriol.

The most important role of vitamin D3 in the body is the regulation of calcium-phosphate metabolism, which directly affects normal skeletal mineralization. In addition, it is involved in cell proliferation and differentiation, insulin secretion, as well as in some functions of the nervous, endocrine and immune systems.

Cholecalciferol is the most popular form of vitamin D used in dietary supplements. Studies show that supplementation with vitamin D in this form most effectively and rapidly raises the level of 25 (OH) D3 – a metabolite that is a marker of the level of vitamin D in the body.

Dosage: according to RDI standards for individual age groups.

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Apollo's Hegemony
10.73 $

The effective dose of Vitamin D3 suspended in olive oil. Supports the health of osteoarticular and nervous systems.

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Apollo's Hegemony
from 27.23 $

Vitamin and mineral complex. The preparation supports metabolism and protects against free radicals.

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Apollo's Hegemony
7.98 $
(4)

Vitamin D3 containing 2000 IU per capsule.

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Apollo's Hegemony
7.98 $

Vitamin D3 in the 4000 IU dose per serving.

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Aliness
8.22 $

A high dose of vitamin D3 from natural sheep lanolin. Food for special nutritional purposes.

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Aliness
8.22 $
(1)

Comprehensive pack of vitamins and minerals enriched with he ginseng root extract, contains natural vitamin C.

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Now Foods
6.88 $

Capsules containing vitamin D. They strengthen bones and teeth, and calcium absorption.

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Vitamin D3 Out of stock
Aliness
18.98 $

Vitamin D3 in the form of cholecalciferol from lanolin. It strengthens bones and supports the nervous system.

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Aliness
13.72 $

A comprehensive preparation that supports the health of joints, tendons, bones. Contains natural fish collagen

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RevitalHair Out of stock
Aliness
8.22 $

Complex formulation improving the quality of hair and nails. Inhibits hair loss and stimulates hair growth.

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Now Foods
17.88 $

Vitamin D-3 and K-2 strengthen bones and teeth, and calcium absorption.

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Now Foods
40.98 $

Multivitamin preparation for pregnant women enriched with complementary effect-enhancing substances.

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Now Foods
from 11.55 $

Capsules containing vitamin D. They strengthen bones and teeth, and calcium absorption.

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Adam Softgels Out of stock
Now Foods
from 25.58 $
(6)

Vitamin-mineral supplement for men. It increases immunity, improves mood and anabolism.

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Aliness
15.10 $

A natural source of vitamin K2 with natto and a high dose of D3 with a clinically proven effect.

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Aliness
10.97 $

Combination of vitamin K2 in the patented form – VitaMK7® and vitamin D3.

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Diamond Fish Oil Out of stock
Apollo's Hegemony
from 6.05 $

Dietary supplement containing omega-3 acids, vitamins D3, E, and K2, in optimally selected proportions.

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Terminator Out of stock
Apollo's Hegemony
38.23 $
(23)

Innovative, synergistic combination of testosterone boosters and estrogen blockers. Ideal as a PCT agent.

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Vitamin D3 & K2 MK7 Out of stock
Apollo's Hegemony
21.73 $
(5)

Vitamin D3 & K2 MK7 tested in accredited laboratory.

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Vitamin D3 Out of stock
Apollo's Hegemony
13.48 $

Natural Vitamin D3 in a high dose – 10 000 IU.

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Vitamin D3 Out of stock
Apollo's Hegemony
13.48 $
(3)

Natural vitamin D3 from lanolin. Keeps teeth and bones healthy, modulates the immune system.

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Vitamin D3 Out of stock
Aliness
6.30 $

Vitamin D3 obtained from lanolin in Extra Virgin olive oil. It strengthens bones and immunity.

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Eve Out of stock
Now Foods
from 21.73 $
(1)

A complex vitamin-mineral product for women, enhanced with natural health-promoting active substances.

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Now Foods
from 16.23 $

A complex of vitamins and minerals for athletes. It promotes metabolism, strengthens and increases resistance.

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Magnesium & Calcium Out of stock
Now Foods
13.48 $

The source of highly absorbable forms of magnesium and calcium, enriched with zinc and vitamin D3.

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Tri-3D Omega Out of stock
Now Foods
17.88 $

Research shows that consumption of EPA and DHA omega-3 fatty acids may reduce the risk of coronary heart disease.

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Now Foods
7.98 $

Supplement supports maintain strong bones and teeth and can help keep eyes healthy.

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Vitamin D-3 & K-2 Out of stock
Now Foods
13.48 $
(1)

Capsules containing vitamin D-3 and K-2. They strengthen bones and teeth, and calcium absorption.

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Vitamin D-3 1000 IU Out of stock
Now Foods
from 7.98 $

Capsules containing vitamin D. They strengthen bones and teeth, and calcium absorption.

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Vitamin D-3 2000 IU Out of stock
Now Foods
from 7.98 $

Capsules containing vitamin D. They strengthen bones and teeth, and calcium absorption.

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Aliness
8.22 $

A set of ingredients of natural origin, supporting the mineralization of the skeleton and circulatory system.

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Liquid Vitamin D-3
Liquid Vitamin D-3 Discontinued
Now Foods
9.63 $

Liquid containing vitamin D. Strengthen bones and teeth, and calcium absorption.

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Ultra A & D3 25000/1000 IU
Ultra A & D3 25000/1000 IU Discontinued
Now Foods
7.98 $

Dietary supplement that contains a combination of vitamin A and D3.

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Men's Extreme Sports Multi
Men's Extreme Sports Multi Discontinued
Now Foods
35.48 $

Men’s Extreme Sports Multi is a multi-vitamin, mineral supplement and antioxidant for the maintenance of good health.

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Vitamin D-3
Vitamin D-3 Discontinued
Now Foods
20.63 $

Capsules containing vitamin D. They strengthen bones and teeth, and calcium absorption.

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Calcium & Magnesium Softgels
Calcium & Magnesium Softgels Discontinued
Now Foods
from 13.48 $

Dietary supplement containing calcium, magnesium, zinc and vitamin D.

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Cal-Mag DK
Cal-Mag DK Discontinued
Now Foods
21.73 $

Model proportions of calcium and magnesium 2:1 Ratio with the addition of vitamins D3 and K2.

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Cal-Mag Caps
Cal-Mag Caps Discontinued
Now Foods
12.38 $

Cal-Mag contains the minerals that are essential for bone health.

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