Sequelae of vagotomy in peptic ulcer are dysphagia, dumping syndrome, gastric emptying disturbances, diarrhoea, and functional disturbances of liver, bile ducts and pancreas. All these disturbances, except dysphagia, are less pronounced after high selective vagotomy than after surgical procedures including drainage techniques. Relapsing ulcer is the most frequent complication; this is rarely a direct consequence of vagotomy, but it is more likely due to non-complete transection of the nerve or to transections not indicated.