Serious. These medicines may interact and cause very harmful effects. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
Xanthine derivatives, including caffeine, prevent adenosine, hexobendine and regadenoson from working.
What might happen:
Your adenosine or hexobendine may not work as well.
What you should do about this interaction:
Adenosine and regadenoson are usually used during surgical procedures or in a hospital. Hexobendine is usually used for heart disease. If you are to have either inpatient or outpatient surgery or tests, are to be admitted to the hospital, or started on hexobendine, make sure that all the healthcare professionals are aware of all the different medicines that you are taking. This includes prescription medicines, herbal drugs, and nutraceuticals. If you are scheduled for a cardiac stress test, your doctor may instruct you to avoid caffeine before your test.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
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