Why do drugs designed to curse some ailments in one organ is the body not affect the other parts ? Explain with an example .

Explanation

Drugs designed to curre some ailments is one organ in the body do not affect the other parts because they work on different receptors. For example , secretion of histamine cause allergy . It also caused acidity due to release of excessive hydrochloric aid in the stomach . Since antiallergic and antacid drugs work on different receptors , therefore , antihistamines cure allergy while antacids remove acidity .