A pain reliever is not a good idea as it will result in overuse and added injury. I was proscribed a cortisone injection for a torn rotator cuff and the pain went away completely and so I continued to use the shoulder without doing any exercises to strengthen the muscles in that area and without letting up on my home improvement project. I injured it further and it took a month of physcial recovery to get back the full range of motion.
I failed to appreciate how many problems involve minor muscle groups that are easily injured with repetitive use. Tennis elbow or golfer's elbow and many other injuries result from stressing small muscles and the cure is to undertake special exercises designed to strengthen these muscles.