Question

Loperamide is an

• A. Antiulcer drug
• B. Antiemetic drug
• C. Antidiarrheal drug
• D. Antidiabetic drug

Hint:

Loperamide = "Low" motility. It slows down the gut to stop diarrhea.

Answer 1

The Correct Option is C

Step 1: Concept
Antidiarrheal agents are used to alleviate the symptoms of diarrhea by reducing intestinal motility.

Step 2: Meaning
Loperamide is a synthetic opioid derivative that acts on the opioid receptors in the myenteric plexus of the large intestine.

Step 3: Analysis
By acting on these receptors, it decreases the activity of the longitudinal and circular smooth muscles of the intestinal wall, slowing down transit time. It does not cross the blood-brain barrier significantly.

Step 4: Conclusion
Due to its effect on intestinal motility, Loperamide is classified as an antidiarrheal drug.

Final Answer: (C)