Toprol-XL and good shape

Been on Toprol XL for 4 years. I am 64 with SVT and mitral valve prolapse. I was started at 50mg daily and got relief but when breakthrough SVT started the dose went up to 50mg in the AM and 25mg in the evening. I still have breakthroughs but can wait them out. I did notice that my SVT or palpitations seemed to be triggered with an imminent BM. I have been diagnosed with fibromyalgia but coincidentally....it started with severe muscle pain when I started taking Toprol XL. I wasn't told that this could be a side effect.HMMMM When my insurance was discontinued (retirement) I started taking the generic due to cost. I haven't noticed any difference between the two. I also noticed that after a SVT episode I have a increase in urination....Toprol or SVT? I also noticed that I am very aware of an increase in a feeling doom. I have had ekgs etc and my heart is in good shape otherwise.

I have only been on Toporal for about a month, 50mg/day. My B/P is now stable, but I am having intermittant chest pain that travels down my arm and into my jaw. I am a 50 yr old female in good shape. I can say that I feel some anxiety daily and that is not normal for me. I have not noticed a weight gain, yet my doctor called today to tell me my potassium levels are too high. Has anyone else experienced this from this drug?

38 yr old male in pretty good shape never had weight problem. I have gained 15# in 6 months, feel and look bloated. Also uneven growth (bald areas) of facial hair.