Drinking coffee has an effect on Chinese herbal medicines, but when taking other medicines, a small amount of coffee will not have much effect. 1. Chinese medicine: for patients with poor sleep quality, taking Chinese medicine is mainly to play a calming, sleep-promoting effect, while the caffeine inside the coffee has the effect of refreshing and waking up the brain, and the drugs play the opposite role, affecting the therapeutic effect of the drug. 2. General Chinese medicine: taking drugs that do not have a calming effect on sleep, if the amount of coffee intake each time is not much, the effect on the drug is not very big. However, in order to try to ensure the effect, it is still recommended that you drink more plain water and reduce the intake of coffee and carbonated beverages. There are a lot of things you need to pay attention to during the treatment with Chinese medicine, so you need to listen to your professional doctor’s guidance and follow the doctor’s instructions.