Many medicines and drugs can affect the rate and rhythm of the heart. A few examples are:
Illegal drugs, such as cocaine or amphetamines, also can cause changes in your heart rate or rhythm.
If changes in your heart rate or rhythm occur following the start of a new medicine:
Last Revised: April 18, 2011
Author: Healthwise Staff
Medical Review: William H. Blahd, Jr., MD, FACEP - Emergency Medicine & David Messenger, MD
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