The amount of medication needed to produce a specific response in 50% of patients is called the:
A) frequency distribution curve
B) median effective dose
C) maximal efficacy drug
D) dose-effect relationship
B) median effective dose
The amount of medication needed to produce a specific response in 50% of patients is called the median effective dose. It appears at the top of the frequency distribution curve of a drug, which indicates if a measurable response occurred in the test group of patients. The median effective dose is abbreviated as "ED50".
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