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  1. Vitamin D Dosing: Basic Principles and a Brief Algorithm ...

    Nowadays, in modern societies, many people can be at high risk to have low vitamin D levels. Therefore, testing of serum 25-hydroxy-vitamin D (25OH-D) levels should be performed before …

  2. Vitamin D Dosage Guide For Adults, Children - GoodRx

    Oct 2, 2023 · Vitamin D is an essential vitamin supplement for maintaining health. Here’s our dosage guide, plus information on when to consult your healthcare provider about taking too …

  3. How much Vitamin D should you take? - Drugs.com

    Aug 11, 2025 · Most adults need 600–800 International Units (IU), or 15–20 micrograms (mcg), of vitamin D per day to support bone and immune health. The exact amount depends on your …

  4. What Vitamin D Dosage Is Best? - Healthline

    Dec 20, 2024 · How much vitamin D do you need for optimal health? In the United States, current guidelines suggest that consuming 400–800 International Units (IU), or 10–20 micrograms …

  5. Vitamin D deficiency in adults: Definition, clinical ...

    Experts agree that levels lower than 20 ng/mL are suboptimal for skeletal health. The optimal serum 25 (OH)D concentrations for extraskeletal health have not been established. (See …

  6. Vitamin D - Mayo Clinic

    Mar 21, 2025 · How much vitamin D the body makes depends on many things. These include the time of day you're in the sun, what season it is, where you live, and the color of your skin. …

  7. What is the recommended dose of Vitamin D (Vit D) for ...

    Feb 22, 2025 · For adults with vitamin D deficiency, the recommended treatment dose is typically 50,000 IU of vitamin D once a week for 8 weeks, followed by maintenance therapy of …