what is verapamil hcl used for
Verapamil Uses: An Overview. 1  High blood pressure (hypertension). 2  Chest pain (angina), including: 3  Vasospastic angina (Prinzmetal's angina or variant angina). 4  Unstable angina. 5  Chronic stable angina (exertional angina). 6  Certain irregular heart rhythms (arrhythmias), including: 7  Chronic atrial flutter.