Guillermo Arévalo

Guillermo Arévalo Valera (born 1952) is a Shipibo vegetalista and businessperson from the Maynas Province of Peru. His Shipibo name is Kestenbetsa.

In 1982, Arévalo co-founded Aplicación de Medicina Tradicional (AMETRA), an organization that sought to improve the sustainability of health care for the Shipibo-Conibo people by integrating traditional plant medicines. He is also the owner of Anaconda Cosmica, a retreat lodge in Peruvian Amazonia. The lodge is marketed to health tourists who are interested in ayahuasca and other traditional medicines of the Amazon.

Among his several children is James Arévalo (b. 1972), a vegetalista whose Shipibo name is Panshincopi.