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LE251
Vitamin D3 1000 IU, 250 capsules
$9.38
Buy
Me
Vitamin D is necessary for utilization of
calcium and phosphorus and in many ways acts as a hormone.1-3 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.4-7*
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. Therefore, a deficiency in vitamin D
will lead to symptoms of calcium deficiency as well. 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.1,8,9
| Serving size 1 capsule |
| Servings per container
250 |
| Amount per serving |
|
| Vitamin D |
1000 IU |
| Other ingredients: rice
flour, coconut oil, sucrose, dl-alpha tocopherol, corn starch, gelatin, and
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. |
Dosage and Use
- Take one capsule daily, or as recommended by a
healthcare practitioner.
- This product is best utilized when taken in divided
doses with
fat-containing, low fiber meals.
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.*
Warnings
-
Keep out of reach of children.
-
Do not exceed recommended dose.
-
If you have a bad reaction to this product,
discontinue use.
-
When using nutritional supplements, please inform
your physician if you are undergoing treatment for a medical condition or if
you are pregnant or lactating.
References
1. Bone. 1997 Jun;20(6):557-62.
2. Pediatr Nephrol. 1996 Jun;10(3):364-7.
3. Rev Rhum Engl Ed. 1996 Feb;63(2):135-40.
4. Proc Nutr Soc. 2001 May;60(2):283-9.
5. J Bone Miner Res. 2003 Jul;18(7):1217-26.
6. Proc Natl Acad Sci USA. 2002 Oct 15;99(21):13487-91.
7. Steroids. 2001 Mar-May;66(3-5):375-80.
8. Am J Clin Nutr. 2002 Dec;76(6):1446-53.
9. Curr Opin Clin Nutr Metab Care. 2002 Sep;5(5):525-31.
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