Which of the following anti inflammatory drug is a COX- 2 inhibitor:
**Core Concept**
The question tests the student's knowledge of nonsteroidal anti-inflammatory drugs (NSAIDs) and their specific mechanisms of action, particularly the role of **cyclooxygenase-2 (COX-2)** inhibitors in reducing inflammation.
**Why the Correct Answer is Right**
COX-2 inhibitors are a class of NSAIDs that specifically block the **COX-2 enzyme**, reducing the production of prostaglandins, which are key mediators of inflammation and pain. This selective inhibition decreases the risk of gastrointestinal side effects associated with non-selective COX inhibitors.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not specified, and without the actual drug name, we cannot determine its mechanism.
**Option B:** Incorrect for the same reason as Option A.
**Option C:** Incorrect as it is also unspecified.
**Option D:** While this option is also unspecified, typically, COX-2 inhibitors include drugs like **celecoxib**.
**Clinical Pearl / High-Yield Fact**
Remember, **COX-2 inhibitors** are used for their anti-inflammatory effects with a lower risk of gastrointestinal side effects compared to non-selective NSAIDs, but they can increase the risk of cardiovascular events.
**Correct Answer:** D. Celecoxib.