This document discusses chronic venous disease and the treatment drug Daflon. It begins with an introduction to chronic venous disease and epidemiology studies showing its prevalence. It then discusses Daflon's active ingredients from rutaceae aurantiae, its efficacy in reducing symptoms compared to other treatments, and its recommendation in clinical guidelines for treating all stages of chronic venous disease. Studies show Daflon significantly reduces pain when used with medical procedures for chronic venous disease.