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  2. The best hair growth vitamins and supplements of 2024 - AOL

    www.aol.com/lifestyle/best-hair-growth-vitamins...

    Key ingredients: Biotin, vitamin A, vitamin C, vitamin E, hyaluronic acid Nature Bounty's Extra Strength Hair, Skin & Nail soft gels is our choice for the best overall hair growth vitamin. It is a ...

  3. Vitamin D toxicity - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_toxicity

    Vitamin D compounds, specifically cholecalciferol (D3) and ergocalciferol (D2), are used in rodenticides due to their ability to induce hypercalcemia, a condition characterized by elevated calcium levels in the blood. This overdose leads to organ failure and is pharmacologically similar to vitamin D's toxic effects in humans.

  4. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    Unlike the other twelve vitamins, vitamin D is only conditionally essential - in a preindustrial society people had adequate exposure to sunlight and the vitamin was a hormone, as the primary natural source of vitamin D was the synthesis of cholecalciferol in the lower layers of the skin's epidermis, triggered by a photochemical reaction with ...

  5. Cholecalciferol - Wikipedia

    en.wikipedia.org/wiki/Cholecalciferol

    The Institute of Medicine in 2010 recommended a maximum uptake of vitamin D of 4000 IU/d, finding that the dose for lowest observed adverse effect level is 40,000 IU daily for at least 12 weeks, [25] and that there was a single case of toxicity above 10 000 IU after more than seven years of daily intake; this case of toxicity occurred in ...

  6. The dark side of daily vitamin D supplements: After a man ...

    www.aol.com/finance/dark-side-daily-vitamin-d...

    Because vitamin D helps regulate calcium levels in your body, hypercalcemia is a direct result of vitamin D toxicity, says Jamie Alan, Pharm.D., an associate professor in the Department of ...

  7. The Bountiful Company - Wikipedia

    en.wikipedia.org/wiki/The_Bountiful_Company

    The Bountiful Company is an American dietary supplements company. It is owned by Kohlberg Kravis Roberts, which sold most of the company's brands to Pfizer in 2021. [2]It was originally known as Nature's Bounty, Inc. but changed its name to NBTY, Inc. in 1995.