Cetirizine hydrochloride

Cetirizine hydrochloride, a hydroxyl derivative of antarol, is an antiallergic drug, a new generation of H1 receptor antagonist, a second-generation H1 antihistamine, without anticholinergic and antiserotonin effects, and rarely crosses the blood-brain barrier. It can inhibit the Chemicalbook of different chemicalinducible mediators including vasoactive polypeptide, substance P, neuropeptide and eosinophil chemotaxis. The effect is quick, strong and lasting after oral administration. Side effects are mild, including drowsiness, fatigue, apathy, and lack of concentration. It is usually not necessary to stop the medication.