Since the products of Zenso series are drug-free, there will not be any side effects on the long-term consumers of Zenso. However, during the course of weight management, customers that are taking Zenso might experience a few common bodily reactions including dizziness during the first few days, lesser defecation due to little solid food intake, disruption of menstrual cycle due to body fat reduction, slight dehydration due to diuretics etc. However, these common bodily reactions will subside after the body adapts to the weight management program