"dr. prescribed for tendonitis, aka tennis elbow on right arm.  after using for 2 days, the pain is diminished and movement of the forearm, grasping with the fingers, and range of motion is very near back to normal with very little pain.  i work on a computer all day, typing and mousing.  i apply 2 grams, 4 times a day to the elbow area.  it makes working very tolerable.  i would say voltaren is a good treatment and really helps bring my arm function back to normal with no pain for tendonitis / tennis elbow.  aspercreme was also ok, but the voltaren does better.  mild stretching, exercise and movement also help and are made much easier with the voltaren."