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Vitamin D supplement, cholecalciferol
Vitamin D3, 400 IU
100 tablets, not capsules
Fat soluble prohormone
FREE BOTTLE FOR THE NEXT FEW DAYS
You only pay the shipping and handling cost of $5.50. If you are buying another product, or products, anyway, adding this free bottle will not increase your shipping and handling cost. Only one free bottle per order. If you wish to buy multiple bottles, the cost is 6.95 each after the first free one and you would need to call our phone reps at 1-877-225-2466.
If you wish to purchase a higher potency product rather this 400 iu bottle, see 1000 iu .
Vitamin D 400 iu, tablet is a fat soluble Dietary Supplement and a prohormone.
Helps Maintain Normal Bone and Tooth Formation
Note: We suggest keeping daily dosages no more than 1000 or 2000 units a day until more studies are published or unless your health care provider has good reason to recommend a high dosage. See the bottom of the page for a full discussion on the safety, cautions, and potential dangers of vitamin D supplementation with high dosages.
Vitamin D3, cholecalciferol, helps the body to regulate the transport of calcium from the digestive system through the bloodstream to bone. It also assists in the retention of calcium and phosphorus.
Vitamin D supplement is 100% natural cholecalciferol. The dry form is specially formulated for easy absorption. It contains no artificial ingredients or preservatives.
Also consider a comprehensive energy improving daily multivitamin and multimineral supplement with vitamin D called MultiVit Rx, formulated by Ray Sahelian, M.D.
The recommended daily intake of vitamin D is 200 to 400 iu for adults younger than 50 years and 400 to 600 iu for those older than 70 years. Vitamin D supplementation is especially important in elderly persons because skin synthesis and absorption may be impaired.
Serving Size: 1 vitamin D pill
Servings Per Bottle: 100
Amount Per Serving:
Vitamin D - 400 IU - 100% daily value
(as D3 cholecalciferol)
Other Ingredients: Dicalcium Phosphate, Vegetable Cellulose, Vegetable Stearic Acid, Vegetable Magnesium Stearate, Silica.
Use: As a dietary supplement, take one vitamin D pill a day with food.
This vitamin D product is free of common food allergens.
No Preservatives, No Sugar, No Milk, No Lactose, No Gluten, No Wheat, No Yeast, No Fish, No Soy. Sodium Free.
In addition to vitamin D supplements
We have several effective all natural products formulated by a medical doctor and researcher, Dr. Ray Sahelian, M.D. These include Mind Power Rx for better mood, focus, alertness, and concentration; Good Night Rx for better sleep; Joint Power Rx for healthy joints; Prostate Power Rx for a healthy prostate gland; and Passion Rx for sexual enhancement in men and women.
Role of vitamin D prohormone
Vitamin D has an important role in the function of organ systems. It helps regulate the calcium and phosphorus levels in the blood by promoting the absorption of these minerals from food in the intestinal tract. Vitamin D helps the re-absorption of calcium in kidney tubules.
Vitamin D is needed for bone growth and bone remodeling by cells in bone called osteoblasts and osteoclasts.
Q. How much vitamin D should be ingested on a daily basis through diet or food?
A. Much depends on your sun exposure, but for most people a dietary and/or supplemental intake of 400 to 800 units a day should be quite acceptable.
Q. I see you only sell vitamin D 400 iu. Why don't you have higher amounts such as vitamin D 2,000 iu?
A. There is some early research that high amounts of vitamin D, such as 2,000 iu, taken daily for many months or years may lead to calcification of arteries. Until more studies are published we prefer to be cautious and have people only take one or two vitamin D 400 iu a day. See bottom of page.
Q. Do you carry vitamin D 5000 units or 50,000?
A. We only carry the 400 iu tablet of vitamin D. Unless for the brief treatment of specific medical conditions, vitamin D 5000 or 50,000 iu should not be used.
Q. I understand there are 2 types of Vitamin D sold over the counter. Which is better?
A. Supplemental vitamin D is available in 2 distinct forms: ergocalciferol ( vitamin D2 ) and cholecalciferol ( vitamin D3 ). Vitamin D3 was previously thought to be the more potent form of vitamin D in all primate species, including humans but this has been disputed with newer findings. Vitamin D3 can also be produced in the skin through exposure to sun. Subsequently, Vitamin D3 is metabolized by the liver and kidney to the biologically active form 1,25-dihydroxyvitamin D3.
Vitamin D2 Is as Effective as Vitamin D3 in Maintaining Circulating Concentrations of 25-Hydroxyvitamin D.
J Clin Endocrinol Metab. 2008 March;
Previous reports suggested that vitamin D2 is less effective than vitamin D3 in maintaining vitamin D status. Our objective was to determine whether vitamin D2 was less effective than vitamin D3 in maintaining serum 25-hydroxyvitamin D levels or increased the catabolism of 25-hydroxyvitamin D3. This was a randomized, placebo-controlled, double-blinded study of healthy adults ages 18–84 yr who received placebo, 1000 IU vitamin D3, 1000 IU vitamin D2, or 500 IU vitamin D2 plus 500 IU vitamin D3 daily for 11 wk at the end of the winter. Our results suggest vitamin D2 is equally as effective as vitamin D3 in maintaining 25-hydroxyvitamin D status.
Q. I want to buy a vitamin D 400 mg supplement but I only see a vitamin D 400 unit capsules. Does vitamin D 400 mg exist?
A. Vitamin D is measured in units rather than mg, therefore there is no vitamin D 400 mg product.
A review of the safety, caution, danger, side effects, adverse events and toxicity, written by Dr. Ray Sahelian, M.D.
The topic of vitamin D has come up a lot lately in the news media and I've had many people ask my opinion regarding supplementation. We've had many emails from readers informing us that their doctors are recommending daily dosages of 1000 units or higher. From the research evidence I have read thus far, it does appear that many people in this country are not getting enough of this vitamin. But what is the right dosage for supplementation? Is it 400, 1000, or 2000 units? A close friend of mine who is a broker for a supplement company informed me that the company she represents is heavily promoting a 5000 unit dosage which is selling quite briskly.
Vitamin D plays an important role in calcium balance and for optimal skeletal growth and bone strength. The major function of vitamin D is to improve the efficiency of calcium absorption from the small intestine. Epidemiological data show low levels of vitamin D lead to a higher incidence of breast cancer, colon cancer, prostate cancer, ovarian cancer, as well as multiple myeloma. Vitamin D supplementation may even improve mood during the winter months.
Few people now question the importance of this vitamin and with the benefits being touted in the media many consumers, and doctors, now think that the more they take the healthier they will be. I do want to caution of the danger regarding excessive intake. Vitamin D taken in high amounts can cause excessive calcification of bone, calcification of soft tissue, kidney stones, headaches, weakness, nausea, and vomiting. Are there currently unknown long term effects of high dose daily use?
Bottom line: Some people may not need to supplement since their diet includes plenty of the vitamin and they get a lot of sun exposure. Most people may benefit from taking 400 units a day either as a pill or as part of their multivitamin product (in addition to their diet and some sun exposure which could be several hundred units a day). A few people -- those who do not consume much of this vitamin in their diet or live in Northern latitudes -- may benefit from taking 600 to 800 units daily. Those who have hardly any sun exposure, or have certain chronic medical conditions, may temporary need 1000 to 3000 units a day for a few weeks or months and then back to 600 to 1000 units daily. I do not think that the average person with a good diet and some regular sun exposure needs to take more than 400 to 600 units a day as a supplement. I have received emails from some doctors who claim I am being too cautious. I would rather err on the side of taking less until long term studies are published regarding the safety of supplementing with 1000 units or more taken daily for a decade or longer. I certainly do not think the 5000 and 10,000 iu pills being promoted are appropriate for the vast majority of the population. Could people taking these high dosages end up dying sooner due to excessive calcification of their blood vessels and soft tissues? There is some early indication that high dosages of vitamin D could cause calcification of vessels in the brain leading to cognitive decline. Could taking high doses of calcium along with these excessive doses of vitamin D make matters even worse?
As with many natural vitamins and supplements too low a dosage can be detrimental to health and too high an intake can have adverse effects. Also, consider also taking more in the winter and less in the summer season.
Do you recommend people being tested for vitamin D levels before taking a supplement?
Unless a person has an unusual diet or a chronic health condition that could lead to severe vitamin D deficiency, I don't think testing is necessary. There are hundreds of blood tests available to check levels of different vitamins, minerals, amino acids, fatty acids such as omega-3s, hormones, cholesterol, various lipids, inflammation markers, liver studies, kidney studies, etc., etc. At some point one has to balance the costs and inconvenience of testing versus the potential benefits they provide. Unless a person has an unusual medical condition or diet where blood vitamin D levels are suspected to be too low or too high, blood testing does not give us much of a clue of how much exactly to supplement. I am cost conscious and practical in my approach. I think in this country we are going overboard in terms of testing, and for the amount of money we spend on diagnostic testing and health care we are not even close to being one of the healthiest nations on the planet. We do so many diagnostic tests in this country without knowing whether people are actually healthier or live longer as a result of the testing. The people who end up being better off are doctors and the those who own the labs. I think if the vast majority of people who don't have an unusual diet or chronic health condition just take 400 to 800 units a day they should be fine and they don't have to worry about checking for vitamin D levels.
Buy vitamin D product on sale. If you buy a vitamin D product along with a multivitamin product, take the vitamin D product less frequently since most multivitamins contain 200 to 600 iu.
Efficacy of vitamin D(3) supplementation in preventing fractures in elderly women: A meta-analysis.
Curr Med Res Opin. 2010 Mar 22. Bergman GJ, Fan T, McFetridge JT, Sen SS.Mapi Values, Houten, The Netherlands.
The efficacy of vitamin D3 in preventing fractures and falls has been explored in a number of clinical trials. However, recent evidence revealed new questions about the adequate doses of vitamin D3 supplementation and its efficacy in fracture prevention independent of calcium supplements for various types of fractures. To conduct a meta-analysis to estimate the effectiveness of 800 IU daily vitamin D3 supplementation for increasing bone mineral density (BMD) and preventing fractures in postmenopausal women. Medline and EMBASE were searched for controlled trials comparing the effectiveness of vitamin D3 against placebo with or without background calcium supplementation in the treatment of postmenopausal women. Eight controlled trials evaluating the effect of vitamin D3 supplementation with or without calcium were assessed. Of 12 658 women included in a Bayesian meta-analysis, 6089 received vitamin D3 (with or without calcium) and 6569 received placebo (with or without calcium). Compared to placebo, vitamin D3 with calcium supplementation showed beneficial effects on the incidence of non-vertebral and hip fractures, while the effects on non-vertebral-non-hip fractures were associated with more uncertainty. Vitamin D3 supplementation showed a 70% probability of being a better treatment than placebo for the prevention of non-vertebral fractures, hip fractures, and non-vertebral, non-hip fractures. Compared to calcium supplementation, vitamin D3 plus calcium reduced non-vertebral fractures and non-vertebral, non-hip fractures, but did not reduce hip fractures. This meta-analysis supports the use of vitamin D3 of 800 IU daily to reduce the incidence of osteoporotic non-vertebral, hip, and non-vertebral-non-hip fractures in elderly women. Vitamin D3 with calcium appears to achieve benefits above those attained with calcium supplementation alone for non-vertebral and non-vertebral-non-hip fractures.