Sweish bitters is a traditional herbal tonic, said to have been formulated originally by Paracelsus and rediscovered by 18th Century Swedish medics Dr. Claus Samst and Dr. Urban Hjärne. In modern times it has been popularised by Maria Treben, an Austrian herbalist. It is claimed to cure a large number of ailments and help digestion. However these claims are presented with little in the way of scientific evidence to back them up.