Our sleep aid patch contains codonopsis, Coptis. It can stimulate the heat-sensing organs in the body, accelerate blood circulation, regulate the abnormal excited state of nerves, thereby relaxing muscles, relaxing tense nerves, and helping sleep. The way to use it is simple: wash and dry your belly button before use, put a patch on your belly button before going to bed, and remove it when you get up (about 8-12 hours). And it can help you sleep and fall asleep quickly.