In the early 1900s the Sanden Electric Company, an American successful business, started to promote in Santiago de Chile a wide range of electric devices that promised to strengthen and to invigorate the exhausted nervous system. Through aggressive marketing tactics - such as the publication of small booklets and testimonial letters - Sanden electrotherapeutic company articulated an influential discourse that permeated the urban landscape and contributed to the spread of medical ideas from the experts to the lay public. This discourse not only allows as scrutinizing the role played by hundreds of objects -part of a growing therapeutic trade - within early twentieth medical culture, but also points to the influence of new technologies and sciences (such as chemistry, electricity and biology) in the medical market and therefore in the development of Chilean medicine. This paper is part of a postdoctoral research on consumer society, therapeutics and mental disorders in Chile between 1850 and 1930. On the one hand, it problematizes the role of academy and governmental institutions, such as the university and the madhouse, in the shaping of medical ideas on mental and nerves disorders. On the other, it places the market and the process of commodification of health care as central pieces in the development of new sciences and technologies that influenced Chilean medicine.