Correct Answer - C
Anti-allergic drugs are used to treat allergy such as skin rashes. These drugs are also called antihistamines because the allergic reactions are caused due to liberatio of histamine in the body i.e histamine cause allergy.
Common drugs of this group are diphenylhydramine. Chlorpheniramine and promethazine. On the other hand. iproniazide is antidepressant drug.
