ABSTRACT
The use of medicinal plants is as old as the history of human beings. They set out to discover, use and convey knowledge that each of them had (Martinez and Marinoff 2008). The fi rst text known of medicinal plants dates back to approximately 3000 BC, along with written evidence of civilizations such as China, India, North Africa and Greece, based mainly on the treatment of diseases, their description and categorization. For instance “The use of aloe leaves for burns” is one such specifi c pharmacological effect (Newall et al. 1996).
