Gynostemma pentaphyllum is a Chinese herbal medicine, which has the effects of expelling wind and removing dampness, dispelling cold and relieving pain, promoting blood circulation and dredging collaterals, and is often used to treat diseases such as rheumatoid arthritis and sciatica.

Because of the cold climate in winter, people are vulnerable to cold pathogens, and Cynanchum atratum has the functions of warming meridians and dispelling cold, promoting blood circulation and dredging collaterals, which can help the human body resist cold pathogens and keep warm. So you can eat rattan in winter.