Berberine originates from the plant genus Berberis. An important part of this plant family is the Berberis aristata, also known as the Indian Berberis or tree turmeric.
La onagra es rica en ácidos grasos poliinsaturados, incluidos el ácido linoleico y el ácido gamma-linolénico, y contiene pocos ácidos grasos saturados.