Metoprolol Tartrate and synthroid

I needed Metoprolol Tartrate for a very high heart rate for graves desease, I was in the 115's+ lowered too 8o beats per min. Which is great!
BUT, having some horrid side effects.
BAD night chills, intolerance to cold. Shake for 3+ hours then sweat. Feels like I was hit by a train after then I get very nauseasous and light headed
Sleep is bad, toss and turn all night and have a greater fear of the dark
ALSO, my bones hurt all the time!! Never did before, had tests done nothing there.
This is the only drug I could find that didn't make my heart flutter and feel all funky. Its a great drug for just that. All the side effects suck..bad

I've been on Toprol for many years due to the Synthroid medication makes my heart race and the Toprol slows it down. I've gone on the generic Toprol, the Metoprolol Tartrate and since I've gone on that, I've notice a lot of hair loss. I never dreamed this med would cause hair loss. Then I read that sheet that comes with the med and it said hair loss is one of the side effects. Has anyone else experienced this? My hair is coming out a lot and it's scary.