Hi Sandy,
I know you posted this 5 years ago so I hope your worries have been put aside. I have been taking Tetrabenazine for over a year for a movement disorder caused by a brain lesion with no side effects that I've noticed and it has helped. I found your post in searching or natural alternatives because my insurance company has attached a $1000 co-pay to this drug, which I can't afford. Did you ever find any alternatives for movement disorder? I hope your son is doing well.
Mike