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1 The Research Laboratories, Parke, Davis and Company, Detroit, Michigan
The ethyl analogue of papaverine (ethaverine) is on the average equal to papaverine in peak potency as a coronary vasodilator in the surviving rabbit heart, when injected quickly. Its action is more durable at suprathreshold dosage so that in total effect summed over time it is more effective.
Submitted on August 11, 1950