Hello, burdock tea is a tea with the same origin of medicine and food, and generally there will be no adverse reactions, but burdock tea? Detoxification effect, so when drinking burdock tea for the first time, there will be various detoxification reactions, such as swollen gums, such as swelling of a certain part of the body, but don't worry, it will disappear naturally after drinking it for three to five days. Burdock is a good thing, so I suggest you drink it all the year round!