Those Responsible for the Pharmacological Actions of Plants are the Active Secondary Metabolites

Objectives: To relate the presence of the active secondary metabolites in the pharmacological actions and the therapeutic effects of the plants. Methods: Search about the topic in the last 5 years and present some active secondary metabolites that explain the pharmacological actions and therapeutic effects of medicinal plants. Conclusions: It was based on the search of articles in the Virtual Library in Health (Spanish: BVS) and using the key words: secondary metabolites, phytotherapy, medicinal plants.