Cetirizine Dihydrochloride (Cetirizine Di-HCl)
Cetirizine Dihydrochloride is a second-generation antihistamine widely used to relieve allergy symptoms such as hay fever, urticaria (hives), and other allergic conditions. It is the dihydrochloride salt form of cetirizine, presenting as a white to off-white crystalline powder that is odorless or nearly odorless and slightly bitter in taste. Cetirizine Dihydrochloride acts as a selective antagonist of peripheral H1 histamine receptors, preventing the effects of histamine and thereby reducing allergic symptoms without causing significant sedation. It is a commonly prescribed active pharmaceutical ingredient (API) in oral tablets, syrups, and capsules.
Mepyramine Maleate BP
Mepyramine Maleate BP is an antihistamine drug commonly used to relieve allergic symptoms such as hay fever, urticaria, and other allergic reactions. It works by blocking histamine H1 receptors, reducing allergic responses like itching, swelling, and redness. This compound is a white or off-white crystalline powder, soluble in water and alcohol, widely used in pharmaceutical formulations including tablets, creams, and injectables.