Clinical pharmacologists have medical and scientific training that enables them to evaluate evidence and produce new data through well-designed studies.
Clinical pharmacology consists of multiple branches listed below: Medicinal uses of plant and animal resources have been common since prehistoric times.
For many years, therapeutic practices were based on Hippocratic humoral theory, popularized by the Greek physician Galen (129 – c. AD 216) and not on experimentation.
The advances that were made at this time gave manufacturers the ability to make and sell medicines that they claimed to be effective, but were in many cases worthless.
There were no methods for evaluating such claims until rational therapeutic concepts were established in medicine, starting at about the end of the 19th century.