What's the recommended dosage for Vitamin D?

The recommended dosage of Vitamin D varies based on individual needs. Andrew Huberman suggests the following:

• General recommendation: Most physicians consider supplementing with 1000 to 2000 IU of Vitamin D per day as safe for most people, helping to maintain adequate levels and prevent deficiency 1.
• For some individuals: Higher doses, such as 5000 to 10,000 IU daily, may be necessary for those with specific health needs, particularly if they are found to be deficient after testing their Vitamin D levels 2.
• Upper limits: The upper tolerable intake level is set at 4000 IU per day, which is considered safe, although reaching hypercalcemia (a potential risk of overdose) typically requires exceptionally high doses over extended periods 3.
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    Vitamin D Insights

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Regular testing of Vitamin D levels through blood tests is recommended to tailor supplementation based on individual requirements effectively 2.