Ice, rest, stretch, The key aspects of tendonitis treatment are resting the area, icing it as needed for pain, and taking anti-inflammatory medicines such as Ibuprofen 600-800 mg 3 times a day with food as long as your stomach tolerates it. Sometimes wearing a splint to immobilize the area, if possible, is a good way of resting the area. Gentle stretching of the tendon daily is also important.
Where. Depends where identify offending activity and do less of it( rice) rest ice nsaids a start.