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.
Common side effects of Isoptin SR (verapamil HCl) include dizziness, slow heartbeat, constipation, nausea, headache, tiredness, skin rash or itching, or warmth, itching, redness, or tingly feeling under your skin. The starting dose of sustained-release verapamil is 180 mg, given in the morning.