Which of the following is a metabolite of carisoprodol
**Core Concept**
Carisoprodol is a muscle relaxant used to relieve muscle spasms and pain. It is a centrally acting agent that works by affecting the central nervous system. The metabolism of carisoprodol involves the cytochrome P450 enzyme system, specifically CYP2C19 and CYP3A4.
**Why the Correct Answer is Right**
Carisoprodol is metabolized to form meprobamate, a well-known anxiolytic and muscle relaxant. This process occurs primarily in the liver, where carisoprodol is converted to meprobamate through hydrolysis by various enzymes, including CYP2C19 and CYP3A4. Meprobamate is responsible for the therapeutic and toxic effects of carisoprodol.
**Why Each Wrong Option is Incorrect**
* **Option A:** This is not a known metabolite of carisoprodol.
* **Option B:** This is not related to the metabolism of carisoprodol.
* **Option D:** This is not a correct metabolite of carisoprodol.
**Clinical Pearl / High-Yield Fact**
Carisoprodol and its active metabolite, meprobamate, can cause sedation, drowsiness, and increased risk of falls, especially in elderly patients. Clinicians should be aware of these potential side effects when prescribing carisoprodol.
**Correct Answer:** C. Meprobamate