Toprol-XL and mg tab

Hi, I'm a 51 y/o female nurse that started taking Toprol-XL for high blood pressure. I don't like taking meds because of side effects (other blood pressure meds have caused my hair to fall out, fatigue, depression, etc.) so I started out only taking half of the 50 mg tab. I recently upped it up to the whole tab to get my blood pressure a little lower and immediately started having severe headaches and joint pains. I'm going back down to a half tab and wean myself off this crap. I'm taking Magnesium, potassium, and L-Arginine, which all help relax the blood vessels. I was taking a higher dose of magnesium, which causes some diarrhea, when I decided to lower it and increase the dose of Toprol-XL to see how that worked. I'd rather have the diarrhea from the magnesium! At least then I wasn't crying from depression, having bad headaches and hurting all over! I'm losing weight on Weight Watchers, so hopefully I'll get this blood pressure under control. My blood pressure was pretty well under control with the lower dose of Toprol-XL, higher dose of magnesium, and the L-Arginine and potassium. I'm going back to what was working before. I'm also going to talk to my Health and Wellness doctor about a safer replacement for the Toprol-XL.