Gentle on the system XLS-Medical is a fat binder that binds up to 27% of dietary fat It is clinically proven to help you lose up to 3X more weight vs. dieting alone. XLS-Medical provide a free support program including a FREE 1-2-1 with the XLS-Medical dietician and online tracking. Gentle on the system XLS-Medical is a fat binder that binds up to 27% of dietary fat It is clinically proven to help you lose up to 3X more weight vs. dieting alone. XLS-Medical provide a free support program including a FREE 1-2-1 with the XLS-Medical dietician and online tracking.