I'm not a PT, but after you correct the biomechanical issues, tendinitis can still be a b*tch to heal...

my sister is an acupuncture physician, and she recommended Udo's Choice omega 3/6/9 oil supplement for my tendinitis. It really helped. 1-1/2 tbsp in the morning and 1 tbsp in the evening - which is a lot of calories to get from oil, but I just tried to reduce the rest of my fat intake as much as possible while I was taking it.