I started Metaprolol Succ. 2 weeks ago when I had a racing heart...

I started Metaprolol Succ. 2 weeks ago when I had a racing heart and ended up in the ER. I was actually dehydrated and low in potassium plus going through a fungal detox and that's why my heart was out of whack. The metaprolol has put me on the couch for 2 weeks. Extreme dizziness like I am being pushed down to the ground, depression, crying, fear, some diarrhea,shortness of breath, feeling drugged out, fatigued, weird vision, and the most awful high anxiety I have ever had! I cannot believe someone could have this much anxiety and not jump out of their skin. The first few days I was taking this, I felt great! Then it just went downhill.. I am trying to take magnesium and inositol (all natural) to help curb the anxiety. I told the doctor to wean me off of this, NOW! I am only taking 25 mg per day and I was told to cut it in half for 4 days and then stop. I can't wait to get this stuff out of my head and system. I never had high blood pressure and taking something for high blood pressure is just not right for my system. All I really needed was magnesium/potassium to get my heart under control. I am going to start Enzymatic Therapy Krebs Cycle Potassium/Magnesium in a few days.