There is no conflict between coffee and Korean ginseng tea in composition, so it can be drunk together in theory. However, both coffee and ginseng tea have the function of exciting nerves, and drinking together may over-stimulate nerves, leading to excessive excitement and insomnia. Therefore, it is suggested that if you want to drink Korean ginseng tea after drinking coffee, it is best to consult a doctor or pharmacist to determine the appropriate drinking time and dosage. In addition, excessive drinking of any caffeinated beverage may cause physical discomfort, so please make sure to drink it in moderation.