Wouldn't one also run into tolerance issues with Ritalin? That's what happened to me years ago when I took it. Had to keep taking more of it to get the same effect.
beaverfury, I also tried Deprenyl awhile back and it didn't do anything for me. I have also read that Olive Leaf Extract because of it's hydroxytyrosol content, can be an MAOI-B....
http://en.wikipedia.org/wiki/Hydroxytyrosol
It says "potent" MAOI-B. Who knows what kind of dosage one would have to use for it to become potent.
Also, according to the info on this site...the OPC's in Grape Seed Extract and Pine Bark Extract <GSE is cheaper> can be of help....
"........in one report scientists suggest the use of OPCs derived from a mixed extract of grape seeds and pine bark is as effective as the most common agent methylphenidate - generic name
Ritalin - employed in treating ADD affected adults and children. This natural compound would be very beneficial as a cure for attention deficit disorder, not to mention being cheaper than the generic drugs currently used to treat this disorder. Though, confirmed to have a beneficial alleviating effect on ADD, there is still a mystery surrounding the actual way in which OPCs affect the brains of Attention Deficit Disorder patients. The biochemical basis behind the cure is not precisely worked out as yet. However, in the course of laboratory studies, results have suggested that OPCs may be helping the brain improve its regulation and use of two excitatory neurotransmitter compounds - the neuro-hormone
dopamine and the hormone norepinephrine. This factor suggests oligomeric proanthocyanidins (OPCs) to have an
antidepressant effect on the brain of ADD affected people. As well as benefiting patients affected by chronic fatigue syndrome without in any way disrupting the functioning of the nervous system in the rest of the body. If this is the actual mechanism, then, there is a lot of hope for ADD and CFS affected patients."
http://www.herbs2000.com/h_menu/opc.htm
Rand