Regarding efficacy and potency of a drug, all are true, EXCEPT:
ED50 refers to Effective Dose of a drug needed to produce a paicular response in 50% of population. It is a quantitative measure of the potency of a drug. Smaller the ED50 value, more potent is the drug. Ref : K.D TRIPATHI 8th ed
In a clinical setup, efficacy is more impoant than potency
In the log dose response curve, the height of the curve corresponds with efficacy
ED50 of the drug corresponds to efficacy
Drugs that produce a similar pharmacological effect can have different levels of efficacy
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