Is daytime sleepiness caused due to Vitamin D medicine?

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Vitamin D is generally well tolerated when taken at the recommended doses. The U.S. Food and Drug Administration does not strictly regulate herbs and supplements so there really isn't much published information about the side effects -- however, there are some reports of daytime sleepiness in patients given vitamin D.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.