Ketotifen fumarate tablets can be used to treat cough, especially for allergic cough. It is mainly used for allergic dermatitis, allergic cough, allergic bronchitis, and also has good effect on allergic skin diseases such as eczema and urticaria, and can prevent bronchial asthma attacks. During the period of taking the drug, you should not work at high altitude, drive a motor vehicle, operate precision instruments, etc. Pregnant women are advised not to take this drug and to drink a lot of water after taking the drug.