The aim of this paper is to describe the figure of the Italian uncompromising physician and poet Giovanni Rajberti (1805-1861), who was a strenuous opponent of non-scientific medical practices in Italy, including Animal Magnetism, Homeopathy and Hydropathy. In particular, he demonstrated the inconsistency of mesmerist practices in an exemplary yet less-known episode that involved the famous French writer Honoré de Balzac (1799-1850). Although his ideas hindered his career, Rajberti continued to criticize alternative practices, sustaining the value of true medicine and science against charlatans.
Keywords: 19th century; Giovanni Rajberti; Homeopathy; Honoré de Balzac; Hydropathy; Italy; Mesmerism.