Can I take Adcal d3 and Alendronic acid together?
Drug interaction guide
Originally published 12 May 2026
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Taking Adcal-D3 (calcium and vitamin D3) at the same time as alendronic acid can stop the alendronic acid from being absorbed into your body. This means the medicine for your bones will not work properly.
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Why this happens
Calcium binds to alendronic acid in the stomach, forming a large complex that the body cannot absorb into the bloodstream.
What you should do
Back to contentsYou must wait at least 30 minutes after taking your alendronic acid before taking your Adcal-D3 or any other food, drink, or medicine. Most doctors recommend taking alendronic acid first thing in the morning on an empty stomach, and then waiting at least 30 to 60 minutes before having breakfast or taking your calcium supplement.
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Using other medicines
Back to contentsTaking 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.
12 May 2026 | Originally published
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