It can eliminate all kinds of allergy symptoms.Its central inhibitory effect is significant, but less than promethazine hydrochloride; It not only has sedation, anti-motion and antiemetic effects, but also has anticholinergic effects.It can ease the bronchial smooth muscle spasm. For a variety of allergic skin diseases,it has active effects, such as urticaria, insect bites;it also used for motion sickness, nausea and vomiting.

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