Can I take Colecalciferol; cholecalciferol and Furosemide together?
Drug interaction guide
Originally published 25 Jan 2026
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Taking these two medicines together can lead to high levels of calcium in your blood (hypercalcaemia). This can cause symptoms like feeling sick, constipation, excessive thirst, or feeling confused.
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Why this happens
Colecalciferol (Vitamin D3) helps your body absorb calcium, while furosemide (a water tablet) can sometimes affect how your kidneys handle calcium. If Vitamin D levels are very high, it can increase the risk of calcium building up in the blood, especially if kidney function is affected.
What you should do
Back to contentsIt is generally safe to take these together if prescribed by your doctor, but you should have regular blood tests to check your calcium levels and kidney function. Contact your doctor if you develop unusual tiredness, nausea, or increased thirst.
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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.
25 Jan 2026 | Originally published
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