Metoprolol Tartrate Side Effects: They had me on a 600mg dose to begin with, which I cut way down t http://www.medications.com/effect/view/41067 They had me on a 600mg dose to begin with, which I cut way down to 200mg daily.I have high blood pressure and tachycardia and it does lower all that quite well. However, I am scared to go to bed at night, because I wake up shaking like I'm having seizures, The biggest problem isn't the medicine, it is that you haven't be Mon, 18 May 2009 07:37:42 -0400 http://www.medications.com/effect/view/41067?item=19911 The biggest problem isn't the medicine, it is that you haven't been diagnosed properly. Check out the full panel of Lyme Disease testing and ask your doctor to put in writing that you don't have it. They will run the tests. You can get rid of the panic http://www.medications.com/effect/view/41067?item=19911