Can I take Magnesium and Vitamin d together?

Why this happens

This is a 'synergistic' interaction. Magnesium is a necessary 'co-factor' for the enzymes that convert Vitamin D into its active form in the blood. Without enough magnesium, Vitamin D may remain stored and inactive. Conversely, Vitamin D can slightly increase how much magnesium your intestines absorb.

What you should do

It is usually fine and often recommended to take these together. However, if you have kidney disease or are taking high-dose supplements, you should speak to your doctor or pharmacist first to ensure your dosages are appropriate for your needs.

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.