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Vitamin
D3
(LEF-251)
1000 IU, 250 capsules
$8.44
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| Vitamin D is necessary for utilization of
calcium and phosphorus and in many ways acts as a hormone.78-80
The two most important forms of vitamin D are
cholecalciferol (D3), which is derived from our own
cholesterol and ergocalciferol (D2), a plant analogue
derived from the diet. The cholecalciferol supplied by the
Life Extension Buyers Club is synthetic, but its form is
identical to that which is derived from cholesterol and
synthesized by sunlight on the skin. Cholecalciferol Vitamin
D is essential for bone growth and maintenance of bone
density.81-84*
A dietary deficiency of vitamin D inhibits
the production of the protein that binds calcium in the
intestines, so that calcium cannot be absorbed, even if
there is adequate intake. Deficiencies of vitamin D are
often found in the elderly and in women who have low intake
of milk and receive inadequate exposure to sunlight. Vitamin
D is potent in minute quantities; one microgram of
cholecalciferol has 40 IU of vitamin D activity.80,85,86
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References
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| Supplement
Facts |
| Serving Size 1
capsule |
| Servings Per
Container 250 |
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Amount Per Serving |
Vitamin D3
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1000 IU |
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Other ingredients: rice flour,
sucrose, dl-alpha tocopherol, corn starch, gelatin,
water. |
| Contains soybeans.
Contains corn and rice. This product contains NO
milk, egg, fish, peanuts, crustacean shellfish, tree
nuts, wheat, yeast, or gluten. Contains NO
artificial sweeteners, flavors, colors, or
preservatives. |
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| Dosage and
Use |
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Take one capsule daily, or as
recommended by a healthcare practitioner. |
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This product is best utilized
when taken in divided doses with fat-containing, low
fiber meals. |
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| Caution |
| Large doses (1400-2000 IU/day) may cause
hypercalcemia, a decrease in renal function, and
nephrocalcinosis. Monthly blood tests to monitor serum
calcium and parathyroid hormone levels should be done to
protect against vitamin D3 toxicity. Those with underlying
kidney disease should avoid high doses of vitamin D3.
Although some research indicates that dosages up to 10,000
IU/day are safe, healthy people should stay below 2000 IU/day. |
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Warnings |
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