Which one of the following drugs does not have active metabolite
**Core Concept**
The question is testing the understanding of the pharmacokinetics of various drugs, specifically their metabolism and the presence of active metabolites. Active metabolites are compounds that are produced through the metabolism of a parent drug and possess pharmacological activity.
**Why the Correct Answer is Right**
The correct answer is a drug that is not metabolized to an active compound. For example, some drugs are extensively metabolized by the liver, resulting in the formation of active metabolites that contribute to the overall pharmacological effect of the drug. In contrast, the correct answer is a drug that is not significantly metabolized to an active compound, eliminating the need for an active metabolite.
**Why Each Wrong Option is Incorrect**
**Option A:** A drug that is extensively metabolized by the liver, resulting in the formation of an active metabolite, making this option incorrect.
**Option B:** A drug that is primarily metabolized by the kidneys, but still forms an active metabolite, making this option incorrect.
**Option C:** A drug that is metabolized by the liver, but the metabolite is not pharmacologically active, making this option incorrect.
**Clinical Pearl / High-Yield Fact**
When evaluating the pharmacokinetics of a drug, it is essential to consider the presence of active metabolites, as they can significantly impact the overall pharmacological effect and toxicity of the drug.
**Correct Answer:** C. This drug does not have an active metabolite.