Yes, I have it. The advise of ice and anti-inflamitories is good. Also, if you are shooting an agressive type cam consider moving to eccentric wheels or traditional. Consider lowering the poundage of the bow, and also consider changing your practice patterns. Don't shoot everyday and turn your pattern to total quality practice instead of quantity. Try to never pull back the bow and let it down without firing it (or course never draw at all without an arrow nocked).

I had an aggressive single cam that I believe started my tendonitis and definetely agravated it. I moved to a different bow and the problem has almost gone away.

One other thing, tendonitis does not heal.

One other thing, my tendonitis acts up if I sleep on my shoulder the wrong way. I have to make sure that I don't sleep on that side with my arm extended past my head. - Just a note.