Rhinitis Composure Tablets is a kind of compound ingredient of Chinese and Western medicine compound finished product, mainly Chinese medicine belongs to the Chinese patent tablets. The main ingredients are Cang Er Zi, Gooseberry, Ephedra and the western drug Chlorpheniramine Maleate which is also commonly known as Paracetamol. Paracetamol is mainly a generation of antihistamine, which is an antacid drug that can easily pass the blood-brain barrier and has the side effects of sedation and drowsiness on the center. It is used for clinical acute and chronic rhinitis, sinusitis and allergic rhinitis. Because it contains chlorpheniramine maleate anti-allergic, so it can be suitable to use anti-allergic rhinitis. Now allergic rhinitis clinical guidance are to choose the second generation of antihistamines, because the second generation of antihistamines are not easy to cross the blood-brain barrier, will not appear to have significant central sedation or drowsiness. Chlorpheniramine maleate is easy to cross the blood-brain barrier, easily produce the side effects of central sedation, drowsiness and weakness, so if engaged in high-risk ultra-high altitude work, such as driving, it is not recommended to take, or can be taken at night before going to bed.