Overview: Antiarrhythmic drugs are used to try to restore normal rhythm in the heart.
Antiarrhythmic drugs are one of the tools used to treat arrhythmias that are dangerous, or arrhythmias that negatively affect patients' quality of life. All drugs involve trade-offs, because they all have side effects that are undesirable. This is certainly true for some antiarrhythmic drugs. Some are effective at reducing arrhythmias, but can also cause arrhythmias or maybe somewhat toxic. Doctors prescribing these drugs have to consider these problems carefully.