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The Power of Pharmacological Sciences: The Example of Proton Pump Inhibitors

Critics have questioned the foundational principles of pharmacological sciences and modern drug therapy; they also claim that drug therapy is often too expensive or of uncertain value. Contemporaneously, alternative medicine has bloomed. Yet the US government began to pay for drug therapy under Medicare in 2006, an explicit recognition of the value of modern drug therapy. To clarify this confusion, we review the philosophical and scientific foundations of pharmacology, drug discovery and development, the attendant strategies and successful results. We also review and answer the major attacks on the philosophical and scientific foundations of modern pharmacology and drug therapy. Finally, we define the characteristics of an ideal drug. As an example of the principles and strategies of modern pharmacological sciences and their successful application, we focus on the discovery and development of proton pump inhibitors (PPIs) of stomach acid production. This class of drugs approaches the ideal and exemplifies successful application of modern pharmacological principles to drug discovery and development. Moreover, the use of PPIs as a pharmacological tool allowed the resolution of important scientific questions, e.g., the role of stomach acid in peptic diseases of the stomach, duodenum and esophagus.