What are the properties of Vitamin D in supplements?

The properties of Vitamin D

Vitamin D is a fat-soluble vitamin synthesized in epidermal keratinocytes. Vitamin D obtained from the diet or synthesis in skin is inactive and needs to be activated enzymatically. Serum levels are primarily maintained through the UVB-mediated conversion of 7-dehydrocholesterol in the skin to cholecalciferol, which is hydroxylated in the liver and kidney to the active form of 1,25-dihydroxyvitamin D [1,25(OH)2D]. There is strong evidence that vitamin D exerts an anti-inflammatory and immunoregulatory effect, in addition to its important role in maintaining adequate serum levels of calcium and phosphorus.



The supplements containing Vitamin D

Vitamin D3 (Cholecalciferol), 125 mcg (5,000 IU), 100 Softgels (Solgar)Vitamin D3 (Cholecalciferol), 125 mcg (5,000 IU), 100 Softgels (Solgar)

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Allergy / Immune Immune Joint / Bone Health Osteoporosis / Bone Health Teeth Whitening Vitamins TBSS ID:
Vitamin D3 (Cholecalciferol), 125 mcg (5,000 IU), 100 Softgels (Solgar) contains amoung others Vitamin D.

Vitamin D3 (Cholecalciferol), 125 mcg (5,000 IU), 100 Softgels (Solgar) is available in many countries around the world.

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Vitamin D is required to promote calcium absorption, which helps to maintain healthy bones and teeth. Vitamin D also supports a healthy immune system. The Vitamin D3 in this product is the same form produced by the body when our skin is exposed to sunlight. As we age, our bodies may produce this...
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PowerCal, Advanced Calcium Formula, 1,000 mg, 180 Tablets (Zahler)PowerCal, Advanced Calcium Formula, 1,000 mg, 180 Tablets (Zahler)

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Joint / Bone Health Minerals Osteoporosis / Bone Health Teeth Whitening TBSS ID:
PowerCal, Advanced Calcium Formula, 1,000 mg, 180 Tablets (Zahler) contains amoung others Vitamin D.

PowerCal, Advanced Calcium Formula, 1,000 mg, 180 Tablets (Zahler) is available in many countries around the world.

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PowerCal tablets is a supplement formulated to promote stronger bones, teeth and healthy gums. PowerCal also helps the body maintain a regular heartbeat and aids in muscle contraction and neurotransmitter release.
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PowerCal, Advanced Calcium Formula, 900 mg, 360 Capsules (Zahler)PowerCal, Advanced Calcium Formula, 900 mg, 360 Capsules (Zahler)

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Joint / Bone Health Minerals Osteoporosis / Bone Health Teeth Whitening TBSS ID:
PowerCal, Advanced Calcium Formula, 900 mg, 360 Capsules (Zahler) contains amoung others Vitamin D.

PowerCal, Advanced Calcium Formula, 900 mg, 360 Capsules (Zahler) is available in many countries around the world.

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Promotes Healthy Bones, Teeth, and Gums
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Vitamin D-3 Drops, 4,000 IU, 0.5 fl oz (15 ml) (Nature's Answer)Vitamin D-3 Drops, 4,000 IU, 0.5 fl oz (15 ml) (Nature's Answer)

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Joint / Bone Health Osteoporosis / Bone Health Stress / Relaxation Vitamins TBSS ID:
Vitamin D-3 Drops, 4,000 IU, 0.5 fl oz (15 ml) (Nature's Answer) contains amoung others Vitamin D.

Vitamin D-3 Drops, 4,000 IU, 0.5 fl oz (15 ml) (Nature's Answer) is available in many countries around the world.

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Vitamin D is called the 'Sunshine Vitamin' because it is produced naturally by the body after exposure to 20 min - 1/2 hour of sunlight. Many people develop deficiencies due to lack of sun exposure, living in cold climates, and other reasons. Vitamin D is most well known for its contribution to...
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Sentry, Multivitamin & Multimineral Supplement, 300 Tablets (21st Century)Sentry, Multivitamin & Multimineral Supplement, 300 Tablets (21st Century)

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Multivitamins Vitamins TBSS ID:
Sentry, Multivitamin & Multimineral Supplement, 300 Tablets (21st Century) contains amoung others Vitamin D.

Sentry, Multivitamin & Multimineral Supplement, 300 Tablets (21st Century) is available in many countries around the world.

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21st Century - Multivitamin & Multimineral Supplement.
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Liquid Norwegian Cod Liver Oil, Natural Lemon-Lime Flavor, 16 fl oz (480 ml) (Nature's Answer)Liquid Norwegian Cod Liver Oil, Natural Lemon-Lime Flavor, 16 fl oz (480 ml) (Nature's Answer)

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Cardiovascular Support Healthy Liver Support Liquid Supplements Natural Nutrients TBSS ID:
Liquid Norwegian Cod Liver Oil, Natural Lemon-Lime Flavor, 16 fl oz (480 ml) (Nature's Answer) contains amoung others Vitamin D.

Liquid Norwegian Cod Liver Oil, Natural Lemon-Lime Flavor, 16 fl oz (480 ml) (Nature's Answer) is available in many countries around the world.

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Nature’s Answer Liquid Cod Liver Oil is harvested from the deep, clean, cold waters of the North Atlantic. Micro-filtered using a thorough multi-step molecular distillation process to remove toxins such as mercury, lead, PBCs and dioxins, it’s the finest natural Omega 3 cod liver oil...
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Vitamin D3 (Cholecalciferol), 25 mcg (1,000 IU), 250 Softgels (Solgar)Vitamin D3 (Cholecalciferol), 25 mcg (1,000 IU), 250 Softgels (Solgar)

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Allergy / Immune Immune Joint / Bone Health Osteoporosis / Bone Health Teeth Whitening Vitamins TBSS ID:
Vitamin D3 (Cholecalciferol), 25 mcg (1,000 IU), 250 Softgels (Solgar) contains amoung others Vitamin D.

Vitamin D3 (Cholecalciferol), 25 mcg (1,000 IU), 250 Softgels (Solgar) is available in many countries around the world.

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Vitamin D is a fat-soluble vitamin that is required to promote calcium absorption, which helps to maintain healthy bones and teeth. Vitamin D also supports a healthy immune system and neuromuscular function. The Vitamin D3 in this product is the same form produced by the body when our skin is...
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Magnesium & Calcium, Reverse 2:1 Ratio with Zinc and Vitamin D-3, 100 Tablets (Now Foods)Magnesium & Calcium, Reverse 2:1 Ratio with Zinc and Vitamin D-3, 100 Tablets (Now Foods)

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Joint / Bone Health Minerals Osteoporosis / Bone Health Vitamins TBSS ID:
Magnesium & Calcium, Reverse 2:1 Ratio with Zinc and Vitamin D-3, 100 Tablets (Now Foods) contains amoung others Vitamin D.

Magnesium & Calcium, Reverse 2:1 Ratio with Zinc and Vitamin D-3, 100 Tablets (Now Foods) is available in many countries around the world.

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This reverse ratio formula is formulated to provide higher levels of Magnesium for those who desire the never, muscle and bone supporting effects of this essential mineral. Zinc and Vitamin D-3 are included in this product for their roles in bone metabolism.
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Clinical Strength Prostate Health, 180 Softgels (Now Foods)Clinical Strength Prostate Health, 180 Softgels (Now Foods)

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Herbs Men's Health / Prostate Prostate TBSS ID:
Clinical Strength Prostate Health, 180 Softgels (Now Foods) contains amoung others Vitamin D.

Clinical Strength Prostate Health, 180 Softgels (Now Foods) is available in many countries around the world.

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NOW Clinical Strength Prostate Health is a combination of botanicals and nutrients that support a healthy prostate gland. Clinical Strength Prostate Health features the botanicals Saw Palmetto Extract, Lycopene and Beta-Sitosterol at potencies that are comparable to those that have been used in...
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Tri-3D Omega, 330 EPA/220 DHA, 90 Softgels (Now Foods)Tri-3D Omega, 330 EPA/220 DHA, 90 Softgels (Now Foods)

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Brain / Mental Clarity Cardiovascular Support TBSS ID:
Tri-3D Omega, 330 EPA/220 DHA, 90 Softgels (Now Foods) contains amoung others Vitamin D.

Tri-3D Omega, 330 EPA/220 DHA, 90 Softgels (Now Foods) is available in many countries around the world.

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The natural fish oil concentrate used in this softgel is manufactured under strict quality control standards. It is tested to be free of potentially harmful levels of contaminants (i.e. mercury, heavy metals, PCB's, dioxins, and other contaminants).
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D3, 25 mcg (1,000 IU), 110 Tablets (21st Century)D3, 25 mcg (1,000 IU), 110 Tablets (21st Century)

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Allergy / Immune Immune Joint / Bone Health Osteoporosis / Bone Health Vitamins TBSS ID:
D3, 25 mcg (1,000 IU), 110 Tablets (21st Century) contains amoung others Vitamin D.

D3, 25 mcg (1,000 IU), 110 Tablets (21st Century) is available in many countries around the world.

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Vitamin D3 is essential for absorption of calcium and support bone, teeth, and immune system health.
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Vitamin D-3 & K-2, 1,000 IU / 45 mcg, 120 Veg Capsules (Now Foods)Vitamin D-3 & K-2, 1,000 IU / 45 mcg, 120 Veg Capsules (Now Foods)

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Cardiovascular Support Joint / Bone Health Osteoporosis / Bone Health Vitamins TBSS ID:
Vitamin D-3 & K-2, 1,000 IU / 45 mcg, 120 Veg Capsules (Now Foods) contains amoung others Vitamin D.

Vitamin D-3 & K-2, 1,000 IU / 45 mcg, 120 Veg Capsules (Now Foods) is available in many countries around the world.

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NOW combines two nutrients extensively researched for their contribution to the health of bones, teeth and the cardiovascular system. Vitamin D3 promotes Calcium transport and absorption. Recent studies indicate that Vitamin D3 may play a role in proper insulin action and glucose metabolism and has...
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Liquid Vitamin D-3, Extra Strength, 1,000 IU, 1 fl oz (30 ml) (Now Foods)Liquid Vitamin D-3, Extra Strength, 1,000 IU, 1 fl oz (30 ml) (Now Foods)

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Joint / Bone Health Osteoporosis / Bone Health Vitamins TBSS ID:
Liquid Vitamin D-3, Extra Strength, 1,000 IU, 1 fl oz (30 ml) (Now Foods) contains amoung others Vitamin D.

Liquid Vitamin D-3, Extra Strength, 1,000 IU, 1 fl oz (30 ml) (Now Foods) is available in many countries around the world.

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Vitamin D is normally obtained from the diet or produced by the skin from the ultraviolet energy of the sun. However, it is not abundant in food. As more people avoid sun exposure, Vitamin D supplementation becomes even more necessary to ensure that your body receives an adequate supply.
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Bone Strength, 240 Capsules (Now Foods)Bone Strength, 240 Capsules (Now Foods)

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Joint / Bone Health Minerals Osteoporosis / Bone Health Teeth Whitening Vitamins TBSS ID:
Bone Strength, 240 Capsules (Now Foods) contains amoung others Vitamin D.

Bone Strength, 240 Capsules (Now Foods) is available in many countries around the world.

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Microcrystalline Hydroxyapatite (MCHA) is a compound that normally makes up the crystalline matrix of bone and teeth and is the substance that gives them their rigidity. MCHA contains highly absorbable Calcium and Phosphorus, which are the major mineral components of bone. Now Bone Strength is a...
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Mega D-3 & MK-7, 5000 IU / 180 mcg, 60 Veg Capsules (Now Foods)Mega D-3 & MK-7, 5000 IU / 180 mcg, 60 Veg Capsules (Now Foods)

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Cardiovascular Support Joint / Bone Health Osteoporosis / Bone Health Vitamins TBSS ID:
Mega D-3 & MK-7, 5000 IU / 180 mcg, 60 Veg Capsules (Now Foods) contains amoung others Vitamin D.

Mega D-3 & MK-7, 5000 IU / 180 mcg, 60 Veg Capsules (Now Foods) is available in many countries around the world.

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NOW Mega D-3 & MK-7 combines vitamins D-3 and K-2, two nutrients extensively researched for their roles in the health of bones, teeth and the cardiovascular system. Vitamin D-3 works with calcium to support bone health, and more recent studies indicate it's important for immune system health as...
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Liquid Vitamin D-3, 2 fl oz (60 ml) (Now Foods)Liquid Vitamin D-3, 2 fl oz (60 ml) (Now Foods)

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Joint / Bone Health Liquid Supplements Osteoporosis / Bone Health Vitamins TBSS ID:
Liquid Vitamin D-3, 2 fl oz (60 ml) (Now Foods) contains amoung others Vitamin D.

Liquid Vitamin D-3, 2 fl oz (60 ml) (Now Foods) is available in many countries around the world.

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Each drop contains 100 IU of Vitamin D, 4 drops provide 400 IU, 20 drops provide 2,000 IU.
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Vitamin D-3, 400 IU, 180 Softgels (Now Foods)Vitamin D-3, 400 IU, 180 Softgels (Now Foods)

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Joint / Bone Health Osteoporosis / Bone Health Vitamins TBSS ID:
Vitamin D-3, 400 IU, 180 Softgels (Now Foods) contains amoung others Vitamin D.

Vitamin D-3, 400 IU, 180 Softgels (Now Foods) is available in many countries around the world.

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Now Vitamin D-3 softgels supply this key vitamin in a highly-absorbable liquid softgel form. Vitamin D is normally obtained from the diet or produced by the skin from the ultraviolet energy of the sun. However, it is not abundant in food. As more people avoid sun exposure, Vitamin D supplementation...
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Chewable Vitamin D-3, Natural Fruit Flavor, 1,000 IU, 180 Chewables (Now Foods)Chewable Vitamin D-3, Natural Fruit Flavor, 1,000 IU, 180 Chewables (Now Foods)

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Joint / Bone Health Natural Nutrients Osteoporosis / Bone Health Vitamins TBSS ID:
Chewable Vitamin D-3, Natural Fruit Flavor, 1,000 IU, 180 Chewables (Now Foods) contains amoung others Vitamin D.

Chewable Vitamin D-3, Natural Fruit Flavor, 1,000 IU, 180 Chewables (Now Foods) is available in many countries around the world.

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Now Chewable Vitamin D-3 supplies this key vitamin in a tasty chewable form. Vitamin D is normally obtained from the diet or produced by the skin from the ultraviolet energy of the sun. However, it is not abundant in food. As more people avoid sun exposure, Vitamin D supplementation becomes even...
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Calcium Citrate, 250 Tablets (Now Foods)Calcium Citrate, 250 Tablets (Now Foods)

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Joint / Bone Health Minerals Osteoporosis / Bone Health TBSS ID:
Calcium Citrate, 250 Tablets (Now Foods) contains amoung others Vitamin D.

Calcium Citrate, 250 Tablets (Now Foods) is available in many countries around the world.

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Calcium Citrate is a readily digested and absorbed form of Calcium, a mineral that is necessary for the maintenance of bone health. Vitamin D, Magnesium, Zinc, Copper, and Manganese have been included for their essential roles in bone metabolism.
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Vitamin D-3 High Potency, 1,000 IU, 360 Softgels (Now Foods)Vitamin D-3 High Potency, 1,000 IU, 360 Softgels (Now Foods)

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Joint / Bone Health Osteoporosis / Bone Health Vitamins TBSS ID:
Vitamin D-3 High Potency, 1,000 IU, 360 Softgels (Now Foods) contains amoung others Vitamin D.

Vitamin D-3 High Potency, 1,000 IU, 360 Softgels (Now Foods) is available in many countries around the world.

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NOW Vitamin D-3 softgels supply this key vitamin in a highly-absorbable liquid softgel form. Vitamin D is normally obtained from the diet. or produced by the skin from the ultraviolet energy of the sun. However, it is not abundant in food. As more people avoid sun exposure, Vitamin D...
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Vitamin D, High Potency, 1,000 IU, 120 Veg Capsules (Now Foods)Vitamin D, High Potency, 1,000 IU, 120 Veg Capsules (Now Foods)

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Joint / Bone Health Osteoporosis / Bone Health Vitamins TBSS ID:
Vitamin D, High Potency, 1,000 IU, 120 Veg Capsules (Now Foods) contains amoung others Vitamin D.

Vitamin D, High Potency, 1,000 IU, 120 Veg Capsules (Now Foods) is available in many countries around the world.

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Vitamin D-2, or Ergocalciferol, is a vegetable-based form of Vitamin D that can help to maintain optimal levels of vitamin D in the body. Vitamin D enhances the uptake of calcium from the diet, is critical for bone health, and promotes dental health.
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If you know of any other quality supplement that has not been yet classified by us, please contact us and we will gladly consider adding it to our catalogue.