Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.
Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.
Dr. Charles "Pat" Davis, MD, PhD, is a board certified Emergency Medicine doctor who currently practices as a consultant and staff member for hospitals. He has a PhD in Microbiology (UT at Austin), and the MD (Univ. Texas Medical Branch, Galveston). He is a Clinical Professor (retired) in the Division of Emergency Medicine, UT Health Science Center at San Antonio, and has been the Chief of Emergency Medicine at UT Medical Branch and at UTHSCSA with over 250 publications.
What are calcium channel blockers and how do they work?
In order to pump blood, the heart needs oxygen. The harder the heart works, the more oxygen it requires.
Angina (heart pain) occurs when the supply of oxygen to the heart is inadequate
for the amount of work that the heart must do. By dilating the arteries, calcium
channel blockers or CCBs reduce the pressure in the arteries. This makes it easier for the heart to pump blood, and, as a result, the heart needs less oxygen. By reducing the heart's need for oxygen,
calcium channel blockers relieve or prevent angina. Calcium channel blockerss also are used for treating high blood pressure because of their
blood pressure-lowering effects.
Calcium channel blockers
decrease the excitability of heart muscle and are therefore used for treating certain types of
abnormally rapid heart rhythms.
What calcium channel blockers are available?
The calcium channel blockers that have been approved for use in the US include: