Can I take Allegra and Ranitidine together?

Why this happens

Fexofenadine is an antihistamine used for allergies, and ranitidine is an H2 blocker used for stomach acid. While both affect histamine receptors, they target different types (H1 vs H2) in different parts of the body. They do not interfere with each other's absorption, metabolism, or removal from the body.

You can take these medicines together as prescribed or directed on the packaging. However, if you are taking Allegra, avoid taking it with fruit juices (like orange, grapefruit, or apple) as they can make the allergy medicine less effective.

Indigestion remedies (antacids)

Do not take indigestion remedies containing aluminium or magnesium within 2 hours of taking this medicine, as they will stop it from being absorbed properly.

NDMA contamination (Product Recall)

Ranitidine has been widely withdrawn from the UK market due to potential contamination with a substance that may increase the risk of cancer (NDMA). Check with your pharmacist if your supply is from a safe, current batch or if you should switch to an alternative like famotidine.

Fruit juices (Grapefruit, Orange, Apple)

Drinking fruit juices can significantly reduce the amount of medicine your body absorbs, making it less effective. Avoid drinking these juices for at least 2 hours before or after taking your tablet.

Alcohol

While there is no direct chemical reaction, alcohol can increase stomach acid and irritate the stomach lining, which may counteract the benefits of taking ranitidine for indigestion or reflux. Some studies also suggest ranitidine may slightly increase the effects of alcohol in some people.

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.