Can I take A1 cal d and Alendronic acid together?

Why this happens

Calcium carbonate (in A1 Cal D) forms insoluble complexes with alendronic acid in the gastrointestinal tract. This significantly reduces the bioavailability (absorption) of the alendronic acid, making it less effective at strengthening your bones.

You must separate these medicines. Take your alendronic acid first thing in the morning on an empty stomach with a full glass of plain water. Wait at least 30 minutes (ideally 60 minutes) before eating, drinking anything else, or taking any other medicines, including your A1 Cal D supplement.

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.