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Home : Ingredients Listing >> Vitamin D Supplements :

What is Vitamin D?



Vitamin D serves a key role in facilitating the absorption of calcium and phosphorus, which may help promote healthy bone function. New studies are also investigating its potential treatment in several other areas of health. The preliminary data has been promising. There are two primary forms found in vitamin D that are important to humans: D-2 (ergocalciferol) and D-3 (cholecalciferol). Although it is available in a few foods such as fatty fish, most dietary intake comes from products fortified with vitamin D, however, the greatest intake (80 to 90%) of it is obtained thru exposure to sunlight. A number of recent studies suggest higher than RDA amounts are needed in the diet to keep vitamin D levels in an adequate range.  Low levels of vitamin D have been found in many populations, especially those in more Northern climates who do not get enough exposure to the sun. Some other deficiencies are linked to falls and accidents in older populations. While adequate levels haven’t been clearly established, many authors feel the needed amounts are much higher than the RDA.  Therefore, supplementation with vitamin D to maintain optimal levels of this valuable compound is very important for active, exercising individuals.


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Vitamin D-3

NOW012

Starting at: $4.55
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Daily Formula

UNV027

Starting at: $5.25
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Beta Carotene

NOW096

Starting at: $5.50
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Ultra A & D-3

NOW140

Starting at: $5.55
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Vitamin D-3

PSP198

Starting at: $6.50
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Vitamin D-3 5,000 IU

NOW188

Starting at: $7.95
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Coral Calcium Mag & D

NTL036

Starting at: $8.50
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Multi V

SPT009

Starting at: $8.50
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Super Multi for Men

FPR001

Starting at: $8.95
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Coral Calcium

NOW097

Starting at: $8.95
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Daily One Caps With Iron

TL0090

Starting at: $9.50
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Cal-Mag Liquid

NOW128

Starting at: $9.95
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Fish Oil with Vitamin D

MRX106

Starting at: $9.95
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Calcium 500 Tabs

TL0255

Starting at: $9.95
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Daily One Without Iron

TL0091

Starting at: $10.50
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True Balance

NOW177

Starting at: $10.50
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Uni-Vite Multi Vitamin

UNV070

Starting at: $11.50
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Multi-Liquid

NOW129

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Focus Now

FNL005

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Focus Now 
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Recover & Repair

MRI033

Starting at: $11.95
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Recover & Repair	Return to Top
Multivitamin & Minerals

F3N008

Starting at: $11.95
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Instant Protein Smoothie

SXS017

Starting at: $11.95
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Wellness Formula Tabs

SCN006

Starting at: $12.00
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Vital Mens

PSP105

Starting at: $12.50
9.28 out of 10 | 59 Reviews

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Up Your Mass

MHP013

Starting at: $12.50
9.12 out of 10 | 50 Reviews

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Vital Womens

PSP104

Starting at: $12.50
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Cal-Mag DK

NOW132

Starting at: $12.55
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Hair, Skin & Nails

TSN007

Starting at: $12.95
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Calcium & Magnesium

NOW172

Starting at: $12.95
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EVE

EVE

NOW068

Starting at: $12.95
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EVE Return to Top
Mega Vitamins & Minerals

HNF010

Starting at: $13.95
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Pre-Natal Care

TL0269

Starting at: $14.50
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