Rimeporide hydrochloride is primarily investigated for its potential therapeutic applications in treating cardiac and muscular disorders. It functions as a sodium-hydrogen exchanger inhibitor, which helps in reducing cellular damage caused by ischemia-reperfusion injury. This makes it a promising candidate for protecting heart tissue during heart attacks or surgeries. Additionally, research explores its use in mitigating muscle degeneration in conditions like Duchenne muscular dystrophy, where it may help slow disease progression by reducing inflammation and muscle cell death. Its application is still under clinical evaluation, but it holds significant promise in improving outcomes for patients with these challenging conditions.