Which of the following statements is true of the potency of a drug? A) The smaller the amount needed to get a particular effect, the more potent the drug. B) Potency strongly relates to how effective a drug is or to how large an effect the drug can produce. C) Potency refers to the relative lethal dose of a drug, especially the cannabinoids and the opioids. D) The ED₅₀ (the effective dose for 50 percent of the animals) of a potent drug is higher than the ED₅₀ of a less potent drug.

Question

Quizplus · Accepted Answer

Potency of a drug is determined by the amount needed to produce a certain effect; a smaller amount indicates higher potency. Potency does not directly relate to the drug's efficacy (how large an effect it can produce) or its lethal dose. The ED50 (effective dose for 50% of the population) is lower for more potent drugs, not higher.

Which of the Following Statements Is True of the Potency