Vitamin D plays in regulating cell division and differentiation. As a result of new research and startling evidence of widespread vitamin D deficiency, prominent nutritional scientists are calling on Americans to increase their vitamin D intake to 1000 IU per day and higher. Source: Life Extension Foundation Ingredients: See below. Sale Price: $16.99 + Free Shipping Quantity Price: $49.99 + Free Shipping Take advantage of FREE air shipping in the USA! Read More . . . Vitamin D has long provided significant support for healthy bone density. Over the past year, however, scientists have validated the critical role that vitamin D plays in regulating cell division and differentiation. These new findings link a deficiency of vitamin D to a host of common age-related maladies. As a result of this new research and startling evidence of 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, however, is only 400 IU. Vitamin D3 is synthesized in the body from sunlight. However, the winter season, weather conditions, and sunblocks inhibit the body's ability to produce optimal levels of vitamin D. All of these factors point to the value of taking a daily supplement to ensure optimal vitamin D intake. For those who need to take very high doses of vitamin D3 and are under a physician's supervision, Life Extension now makes available a 5000 IU vitamin D3 supplement. Supplement Facts Serving Size: 1 capsule Servings Per Container: 60 Amount Per Serving Vitamin D3 (as cholecalciferol) - 5000 IU Other ingredients: dicalcium phosphate, magnesium stearate, silica. Contains corn. This product contains NO milk, egg, fish, peanuts, crustacean shellfish, soybeans, tree nuts, wheat, yeast, gluten, or rice. Contains NO artificial sweeteners, flavors, colors, or preservatives. Dosage and Use: Take one capsule daily with a fat containing, low fiber meal, or as recommended by a healthcare practitioner. Caution: Do not use if taking digoxin or any cardiac glycoside. Use of thiazides and high dose vitamin D may cause hypercalcemia. Hypercalcemia can result in calcification of soft tissues such as kidney, blood vessels, heart, and lungs. If you have any questions, please contact us at info@lifeextensionvitamins.com, 1-510-527-3005 or 1-888-771-3905. vitamind3-5000Retail Price: $22.00Sale Price: $16.99 60: caps ~ 020507 Safe Upper Limit of 10,000 I.U. for Vitamin D is Suggested by New Risk Assessment Review Quantity Price for Vitamin D3 5000 IU vitd3-5000$49.99 4: bottles FREE AIR MAIL SHIPPING IN THE UNITED STATES! The statements made here have not been evaluated by the FDA. The foregoing statements are based upon sound and reliable studies, and are meant for informational purposes. Consult with your medical practitioner to determine the underlying cause of your symptoms. Copyright 1997-2009 Life Extension Vitamin Supplies and Life Extension Institute, Inc. All rights reserved.