Key Takeaways

It may be best to take vitamin D in the morning because taking it at night might reduce melatonin production.

Most foods do not have enough vitamin D to meet people's needs, so supplements can help fill the gap.

Consider taking vitamin D during darker months when the sun is less intense.

Taking vitamin D in the morning is most beneficial, as evening intake may interfere with melatonin production and impact sleep quality. For most adults, a daily dose of 600 IU to 800 IU is typically recommended; however, individual needs may vary.

How Timing Affects Vitamin D Absorption

Research suggests that taking vitamin D in the morning may be more effective than in the evening, as evening intake can reduce melatonin production. Melatonin helps you feel sleepy, while vitamin D and

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