What is the advantage of using antihistamines over antacids in the treatment of acidity?

(N/A) Antacids control only symptoms and not the cause. They work by neutralizing the acid produced in the stomach but do not control the cause of excess acid production.
Antihistamines are drugs that suppress the action of histamine,which is the chemical responsible for stimulating the secretion of pepsin and $HCl$ in the stomach.
Antihistamines prevent the binding of histamine with the receptors present in the stomach wall,resulting in lower acid production and,therefore,providing a better and more effective treatment.