Why Was I Prescribed Amlodipine For Back Pain That Radiates From Side To Side?

I went to the cardiologist on yesterday Because I have been having pain in my back it s a pain that moves from one side of my back to the other and the Dr put me on amlodphrine because she doesn t think it s from my heart but I didn t get a answer as to what it could be. Can u tell me what could be the cause