The term "Flecainide S Isomer" refers to a specific chemical compound used in the medical field. Synonyms for this compound include S-Flecainide, Flecainide Single Isomer, and (R)-Flecainide. These synonyms are commonly used by professionals in the pharmaceutical industry and healthcare practitioners to describe the same substance. Flecainide S Isomer is primarily utilized as an antiarrhythmic drug, effectively treating irregular heartbeats and maintaining a regular rhythm. The administration of this compound requires precise monitoring, as it can have potential side effects. However, it remains a vital medication in managing various cardiac conditions, thus playing a crucial role in maintaining patients' overall cardiovascular health.