There is a strange tendency that many people have, often academics, to reduce or simplify the workings of plants to one of it's major constituents, while ignoring the role that other constituents play. You will find such discussion on many psychoactive plants. Yohimbe and St. Johnswort are good examples of this.
But when a plant is looked at more deeper (mostly when a plant is very interesting and widely used) it often turns out that effects are caused by a less simplistic cause: a wide array of major and minor constituents.
Because many strong psychoactive kratom alkaloids have become commercially available and because of research; we now know that there are many...