Can I take Colecalciferol and Losartan together?

Why this happens

These drugs work in different ways and are processed by different pathways in the body. Losartan is an angiotensin II receptor blocker (ARB) used for blood pressure, while colecalciferol is a vitamin supplement for bone health. They do not interfere with each other's absorption or effectiveness.

What you should do

You can continue taking both medications as prescribed by your doctor. No special precautions are needed, but it is always good practice to have your blood pressure and kidney function monitored regularly as part of your routine check-ups while taking losartan.

Important precautions

Hypercalcaemia (high blood calcium)

Do not take colecalciferol if you have high levels of calcium in your blood or urine, or if you have severe kidney stones, as vitamin D increases calcium absorption and can worsen these conditions.

Pregnancy

You must not take losartan if you are pregnant or planning to become pregnant, as it can cause serious harm or death to an unborn baby.

Food and drink warnings

Alcohol

It is best to avoid or strictly limit alcohol while taking colecalciferol. Long-term heavy alcohol use can interfere with how your body absorbs and processes Vitamin D, making the treatment less effective.

It is best to avoid or strictly limit alcohol while taking losartan. Alcohol can increase the blood pressure-lowering effect of losartan, which may make you feel dizzy, lightheaded, or faint, especially when standing up. Combining alcohol with medication also increases the risk of liver damage.

Potassium-rich foods (e.g., bananas, spinach, salt substitutes)

Losartan can increase the levels of potassium in your blood. You should avoid using salt substitutes containing potassium (such as Lo-Salt) and speak to your doctor before significantly increasing your intake of potassium-rich foods, as high potassium levels can affect your heart rhythm.

High-fat meals

Colecalciferol is a fat-soluble vitamin. It is best absorbed by your body when taken with a meal that contains some fat (such as eggs, avocado, nuts, or dairy).

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.