The drugs intended to reduce blood pressure, correct arrhythmias and some forms of heart disease are the most commonly prescribed drugs in the US. One in every three adults, or approximately 75 million people, is diagnosed with high blood pressure in the US and many more have pre-hypertension. About 15 million people have some form of irregular heartbeats or arrhythmias. The most commonly prescribed drugs to treat these and other conditions are the so called “channel-blockers” or “agonists” which include calcium, sodium and potassium channel blockers. Worldwide sales of these drugs have reached $6 billion. In the United States, calcium channel blockers are the eighth largest drug class in prescription sales.