Mid-january I was diagnosed with a tachycardia. I was treated with propragnolol (inderol) . I suffered symptoms like vision problems such as trails,depth perception is off, floaters aura type surrounding people mostly on blank white walls I felt like my head was in a cloud. Also, I experienced elevated anxiety,feeling as I wasn't breathing, black stool, and a heart rate of 140 for 2 months straight. I underwent an ablation on march 16 which seemed to take care of the tachycardia. I have been off the propragnolol for about a week now, however I am still experiencing the trails and the slight anxiety, the sensation that in not breathing and black stool. I spoke to my doctor about this her thoughts are that I have a bleeding ulcer. My question is can an ulcer cause vision problems or can this only be caused by something more serious? I am terrified by this. I have done research on a number of causes of this type of vision problem like hddp which concerned me since I had experimented with lsd and shrooms when I was younger. Please help