Brian Collins: Dear Brian, Many of us are taking Selegiline, along with Sinemet, as our primary or only medications for PD. I have been following the literature since Eldepryl was permitted in USA by FDA after the DATATOP study. (ca:1989} and am keenly interested in all aspects of the mechanism of action. Do you perchance have a reference for "selegiline had the power to break down the MTPT before it got to the brain." ? Thank you, Mary Manfredi [log in to unmask]