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Drug Description

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Flecainide is a medication used to prevent and treat abnormally fast heart rates. This includes ventricular and supraventricular tachycardias. Its use is only recommended in those with dangerous arrhythmias or when significant symptoms cannot be managed with other treatments. Its use does not decrease a person's risk of death. It is taken by mouth or injection into a vein.Common side effects include dizziness, problems seeing, shortness of breath, chest pain, and tiredness. Serious side effects may include cardiac arrest, arrhythmias, and heart failure. It may be used in pregnancy, but has not been well studied in this population. Use is not recommended in those with structural heart disease or ischemic heart disease. Flecainide is a class Ic antiarrhythmic agent. It works by decreasing the entry of sodium in heart cells, causing prolongation of the cardiac action potential.Flecainide was approved for medical use in the United States in 1985. It is available as a generic medication. A month supply in the United Kingdom costs the NHS about £7.68 as of 2019. In the United States the wholesale cost of this amount is about 18.60 USD. In 2016 it was the 273rd most prescribed medication in the United States with more than a million prescriptions.

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