Serdia Pharmaceuticals [India] Pvt Ltd offers Medicine for Painful or Swollen Legs. Serdia Pharmaceuticals [India] Pvt Ltd also manufactures various types of drugs for cardiology, metabolism and neuropsychiatry. The company undertakes epidemiological surveys to learn more about the prevalence and manifestation of various diseases The Medicine for Painful or Swollen Legs, also known as Daflon 500, is taken in manifestations of chronic venous insufficiency like nocturnal cramps and varicose veins. The Medicine for Painful or Swollen Legs stops bleeding due to haemorrhoids [piles] and prevents further bleeding episodes.