Vitamin D, also known as the "active vitamin D," is essential for calcium to be absorbed into the body, according to the National Institutes of Health. Vitamin D can absorbed in three ways: eating foods rich in vitamin D, skin absorption and supplementation. If you take vitamin D supplements, the NIH recommends 400 to 600 International Units daily. Incorporating foods, such as saltwater fish, liver, fortified milk and egg yolks, also provide your body with the needed vitamin D.
Nature Made
According to a "Pharmacy Times" survey, Nature Made Vitamin D is the no. 1 pharmacist recommended brand. The supplement is made with the more potent and naturally occurring D3 form of vitamin D compared to the D2 form. A bottle of Nature Made Vitamin D comes with 100 tablets and also includes calcium carbonate, cellulose gel, maltodextrin, croscarmellose sodium, stearic acid, magnesium stearate and corn starch. There are no artificial flavors, colors or preservatives, yeast and gluten in Nature Made Vitamin D.
Nature's Bounty
Nature's Bounty Super Strength D-2000 IU contains 100 softgel capsules made from the stronger D3 vitamin form, instead of the D2 form. The D3 form is also known as cholecalciferol, which is believed to be more effective in maintaining vitamin D levels. The liquid softgels are absorbed quickly and release the contents of the capsules rapidly. Nature's Bounty also makes a 200-count bottle of Super Strength D-2000 IU softgels. Other ingredients include soybean oil, gelatin, vegetable glycerin and corn oil. Super Strength D-2000 IU has no artifical color, flavor or sweetener, no preservatives, sugar, starch, milk, lactose, gluten, wheat, yeast or fish and is sodium free.
Puritan's Pride
Puritan's Pride Super High-Potency Vitamin D (D-3) 2000 IU is made from the more active D3 vitamin D form. Vitamin D helps promote strong bones and teeth, as well as a strong immune system, according to Puritan's Pride website, through its synthesis of calcium. Puritan's Pride also sells bottles containing 100 and 200 rapid-release softgels of 2000 IU, 100 and 250 coated tablets of 400 IU, and 100 and 200 rapid-release softgels of 1,000 IU. Other ingredients include soybean oil, gelatin, vegetable glycerin and corn oil. The supplement has no artificial color, flavor or sweetener, and no preservatives, sugar, milk, lactose, gluten, wheat, yeast or fish. It is sodium free.
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