Dosophylline Injection is a bronchodilator, can relax the bronchial smooth muscle, clinically mainly used to improve the various causes of bronchospasm. Action and efficacy: Dosophylline Injection is a methylxanthine derivative, through the inhibition of phosphodiesterase in the bronchial smooth muscle, direct action on the bronchial tubes, relaxation of bronchial smooth muscle, to achieve the relief of bronchospasm, is mainly used for bronchial asthma, wheezing bronchitis, as well as other causes of bronchial spasm caused by dyspnea. Dosophylline adverse reactions: may cause nausea, vomiting, epigastric pain, headache, insomnia, irritability, tachycardia, preterm contraction, shortness of breath, hyperglycemia, proteinuria. Serious arrhythmia and paroxysmal spasms can also occur if overdose is used. Dosophylline contraindications: allergic to the product and its components are prohibited; acute myocardial infarction patients are prohibited; pregnant women should be careful, lactating women are prohibited; the safety of children’s use of the drug has not been clarified, it is not recommended to use. If you need to use drugs, need to be used under the guidance of a specialist, not self-medication.