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Vitamin D has long provided significant support for healthy bone density. However, scientists have validated the critical role that vitamin D plays in regulating healthy cell division and differentiation, and has profound effects on human immunity. These findings link a deficiency of vitamin D to a host of common age-related problems. As a result of this research and startling evidence of a widespread vitamin D deficiency, prominent nutritional scientists are calling on Americans to increase their vitamin D intake to 1000 IU per day and higher. The current RDA is only 400 IU.
Vitamin D is synthesized in the body from sunlight. But, due to the winter season, weather conditions, and sunscreen blockers, the bodys ability to produce optimal vitamin D levels may be inhibited. In fact, it has been proposed that annual fluctuations in vitamin D levels explain the seasonality of colds. All of these factors point to the value of taking a daily vitamin D supplement to ensure optimal vitamin D intake.
Just one capsule a day supplies 1000 IU of vitamin D3 (cholecalciferol), a form of the vitamin that is identical to that derived from sunlight on the skin.
Life Extension has upgraded its vitamin D capsules to a small, easy to swallow softgel form that does not include allergen ingredients or vegetable stearate.
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.
Individuals consuming more than 2,000 IU/day of vitamin D (from diet and supplements) should periodically obtain a serum 25-hydroxy vitamin D measurement. Toxicity is very unlikely in healthy individuals at a dose of less than 10,000 IU. Vitamin D supplementation is contraindicated in individuals with hypercalcemia (high blood calcium levels). People with kidney disease, certain medical conditions (such as hyperparathyroidism, lymphoma, sarcoidosis), and those who use cardiac glycosides (digoxin) or thiazide diurectics should consult a physician before using supplemental vitamin D.