Levocetrizine Hydrochloride is active pharmaceutical ingredient which is needed to produce drug meant for treating runny nose, watery eyes, sneezing and hives. Advanced formulation of this antihistamine substance effectively prevents generation of histamine in human body during allergic condition. Recommended for oral administering purpose, dosage of Levocetrizine Hydrochloride depends on physical condition of patient. Standard of this substance has been verified on the basis of its storage life, composition, effectiveness, possible side effects and processing method. Special care needs to be taken before administering of this drug in case the patient has urination complication, liver disorder, gallbladder problem and kidney complication.