36 yr old male. E.R. doctor prescribed generic toplrol for tachyc...

36 yr old male. E.R. doctor prescribed generic toplrol for tachycardia March 9, 2006. Had really wacky feeling first week. Then anxiety, depression. Bad stomach problems. Would have to get up in the middle of the night for a bowel movement. It also screwed up my blood sugar. If I didn't eat every couple hours I would get a bad hypoglycemic attack where I couldn't focus and shaky with a really sick feeling. Was on 50mg twice a day. Cut it to 50mg once a day and felt 90% better. Slowly weaned myself off of it. Been completely off for 30+ days. Feel better and tachycardia is no worse than when I was on the med. Have always felt the tachycardia was caused by something gastro-intestinal . anyone else experience this?