Archie actually refers to theophylline, a drug that has the effect of calming wheezing and dilating the bronchi, and can be used to relieve wheezing symptoms. For example, bronchial asthma, obstructive emphysema or cardiogenic pulmonary edema caused by wheezing, can also be used for wheezing bronchitis. However, oral theophylline has a slow onset of action and is not suitable for use during persistent asthma attacks or acute attacks of bronchospasm. If theophylline is taken only once a day, as asthma often attacks or worsens in the early morning, taking the drug at 8-9 pm can effectively control asthma, but if theophylline is taken twice a day, it can be taken at 8-9 pm in the morning and evening. Food will reduce the stimulation of theophylline on the gastrointestinal tract, so you can take the medicine about 30 minutes after meals, the effect is better, and avoid smoking during taking the medicine, and not to take food containing caffeine, and avoid drinking a lot of alcohol, otherwise it will lead to the corresponding side effects.