I was on toprol xl 100mg and verapamil 240 mg. My gp also would not listen, so i went to my endo. I am now on 240 mg of verapamil, and stop the toprol. Toprol caused me to have so many back side effects that i just could not cope. I now take verapamil, hctz, avapro. So far, i am doing much better and my bp has finally stablized. Bp when i was on toprol xl was 170/75. It is now about 120-125 /60-70. But most of all I do not have any muscle pain, tiredness or any other side effect. I agree with Cassibel, may you should see if the verapamil can be increased. Good luck.