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  2. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, along with numerous other biological functions. [ 1 ] [ 2 ] In humans, the most significant compounds within this group are vitamin D 3 ( cholecalciferol ) and vitamin D 2 ( ergocalciferol ).

  3. Bioavailability - Wikipedia

    en.wikipedia.org/wiki/Bioavailability

    The pharmacological definition cannot apply to these substances because utilization and absorption is a function of the nutritional status and physiological state of the subject, [10] resulting in even greater differences from individual to individual (inter-individual variation). Therefore, bioavailability for dietary supplements can be ...

  4. Ergocalciferol - Wikipedia

    en.wikipedia.org/wiki/Ergocalciferol

    Ergocalciferol, also known as vitamin D 2 and nonspecifically calciferol, is a type of vitamin D found in food. It is used as a dietary supplement [ 3 ] to prevent and treat vitamin D deficiency [ 4 ] due to poor absorption by the intestines or liver disease . [ 5 ]

  5. Calcitriol - Wikipedia

    en.wikipedia.org/wiki/Calcitriol

    Calcitriol was identified as the active form of vitamin D in 1971 and the drug was approved for medical use in the United States in 1978. [7] It is available as a generic medication . [ 12 ] In 2022, it was the 254th most commonly prescribed medication in the United States, with more than 1 million prescriptions.

  6. When Is the Best Time to Take Your Vitamin D? - AOL

    www.aol.com/lifestyle/best-time-vitamin-d...

    Vitamin D benefits. Vitamin D is a fat-soluble vitamin that helps our body absorb calcium, thereby supporting bone health, says Keri Gans, M.S., R.D., registered dietitian and author of The Small ...

  7. Parenteral nutrition - Wikipedia

    en.wikipedia.org/wiki/Parenteral_nutrition

    Vitamins may be added to a bulk premixed nutrient immediately before administration, since the additional vitamins can promote spoilage of stored product. [citation needed] Vitamins can be added in two doses, one fat-soluble, the other water-soluble. There are also single-dose preparations with both fat- and water-soluble vitamins such as Cernevit.

  8. A vitamin K–rich diet may help protect your health as you age ...

    www.aol.com/finance/vitamin-k-rich-diet-may...

    What is vitamin K? “Vitamin K is a fat-soluble vitamin, so your body stores it in fat tissue and the liver,” Heather Viola, DO, Primary Care Physician at Mount Sinai Doctors-Ansonia, tells ...

  9. Cholecalciferol - Wikipedia

    en.wikipedia.org/wiki/Cholecalciferol

    Vitamin D overdose is impossible from UV exposure; the skin reaches an equilibrium where the vitamin degrades as fast as it is created. [ 42 ] Cholecalciferol can be produced in skin from the light emitted by the UV lamps in tanning beds , which produce ultraviolet primarily in the UVA spectrum, but typically produce 4% to 10% of the total UV ...