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Can I take Vitamin b complex and Vitamin d together?

Drug interaction guide

There are no known harmful interactions between Vitamin B complex and Vitamin D. In fact, these vitamins are often taken together to support overall health, as they work in different ways within the body.

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Why this happens

Vitamin B complex (which includes B1, B2, B3, B5, B6, B7, B9, and B12) and Vitamin D use different pathways for absorption and metabolism. Vitamin B complex consists of water-soluble vitamins, while Vitamin D is fat-soluble. They do not compete for the same receptors or interfere with each other's effectiveness.

What you should do

It is safe to take Vitamin B complex and Vitamin D at the same time. To help your body absorb the Vitamin D better, it is best to take it with a meal that contains some fat (such as yoghurt, eggs, or avocado). Always follow the dosage instructions on the packaging or those provided by your healthcare professional.

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Using other medicines

Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Disclaimer

This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.

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Article history

The information on this page is written and peer reviewed by qualified clinicians.

  • 25 Jan 2026 | Originally published
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