Can I take 0.35mg and Calcium together?

Why this happens

Calcium carbonate or other calcium salts bind to the levothyroxine in your stomach or intestines. This creates a complex that is too large for your body to absorb into the bloodstream, meaning the medicine passes through your system without working.

You should separate the time you take these two by at least 4 hours. It is usually best to take your levothyroxine on an empty stomach first thing in the morning, and wait until lunch or dinner time to take your calcium 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.