Hello, how long can you lose weight by drinking Runyouyan polypeptide? Drinking Runyouyan polypeptide for one to two months can reduce weight. Runyouyan polypeptide drink is really used in the hospital. According to the patient's condition, the doctor will prescribe a prescription that takes one to two months to take effect. Runyouyan polypeptide drink is aimed at losing weight. It belongs to diet pills, and the price depends on the drugstore. Generally, it is sold in Taobao official website or some offline pharmacies. After taking slimming products or avoiding milk, cassia seed belongs to cold food and is not suitable for breastfeeding.