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.
You should not use verapamil if you are allergic to it, or if you have a serious heart condition such as:  1 sick sinus syndrome or AV block (unless you have a pacemaker); 2  severe heart failure; 3  slow heartbeats that have caused you to faint; or.