Normal extinction of species that occurs as a result of changes in local environmental conditions.
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.
1 Verapamil comes in these forms: oral extended-release capsule, oral extended-release tablet, and oral immediate-release tablet (Calan). 2 Verapamil relaxes your blood vessels, which can reduce the amount of work your heart has to do. Itâs used to treat high blood pressure.