Taking Inderal (propranolol) will not typically affect your heart ultrasound (echocardiogram). However, because Inderal is a beta-blocker that lowers your heart rate, it can significantly affect your treadmill stress test by preventing your heart rate from reaching the necessary target. Please contact your doctor or the testing facility as soon as possible. They will guide you on whether you need to safely and temporarily pause taking your medication before the stress test. Do not stop taking your medication without their direct advice.
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Will taking Inderal 40 for my racing heart affect the results of my upcoming heart ultrasound and treadmill stress test?