when i had it I went for injection, helped for a while and then hospital physio gave me a strap, went back to docs but said it was too soon for another jab (2 months) doc prescribed a chilli based cream to rub on my elbow at the source of the pain, apparantly what it does is numb the nerve endings causing the pain, i took rest for about a week and continued to use a support strap when i returned to work and as Luke said tried to alternate between left and right arms, well it worked and has'nt returned in two years. Dont know the brand name of the cream but ask your doctor as they should know and I had to get in on prescription, all i can say is it worked for me.
Simon