Yes im sure it will bring noticible effects
Longer duration and more umpffff.
But really, make a blend with the leaf only, and then add the extract to another non-MAOI herb blend. This way you have the best of a few blends. The caapi leaf in changa is soooo strong as is, there is not much need in adding any more push to it.
Play around with a few different blends and check it out. Report back on your findings