Why was cimetidine designed?

Correct option is D

The correct answer is (D) It prevents the interaction of histamine with the receptors present in the stomach wall.

Explanation:
• Cimetidine is an antacid/antihistamine medication classified as an H2-receptor antagonist.
• It was explicitly designed to block the interaction of histamine with the H2 receptors in the stomach wall, thereby decreasing the secretion of stomach acid.

Information Booster:
• It is commonly used to treat and prevent peptic ulcers and gastroesophageal reflux disease (GERD).
• The discovery of Cimetidine was a major breakthrough in pharmacology, as earlier antacids only neutralized existing acid without stopping its production.

Additional Knowledge:
• Relieves anxiety (Option C): Refers to tranquilizers or sedatives, not Cimetidine.