Compound Theophylline Ephedrine is mainly used to treat bronchial asthma. Compound Theophylline Ephedrine contains theophylline, caffeine, theobromine, ephedrine and belladonna, etc. Its three purine compounds play a role in relaxing the bronchial smooth muscle by inhibiting the enzyme phosphodiesterase, ephedrine can stimulate the β-adrenergic receptor, and belladonna can block the M cholinergic receptor. All the drugs work together to produce a synergistic effect on the relaxation of bronchial smooth muscle, used in the treatment of bronchial asthma and so on. Compound theophylline ephedrine precautions caution in patients with cardiovascular disease, nighttime administration can be given at the discretion of the tranquilizer sedative, to avoid causing insomnia. Adverse reactions are not clear. Contraindications are allergic to the product, heart disease, hypertension and glaucoma patients are prohibited. The above drugs need to be used under the guidance of a doctor, the specific treatment program, need to be guided by a doctor for better treatment of the disease.