No, it probably wont CURE tendonitis. But Lindsay Taylor referred to it as “black magic” even before I told her that Kelly Starret called it voodo. Had a football player preparing for the NFL combine that had been inhibited by tendonitis in his knee for a about 6 months go totally pain free with a greatly improved range of motion in the less than 5 minutes that it took to do this. From what I understand, this originally came from Donny Thompson. It works, try it.