A man that calls for square dancing in our area is going this month for a botox injection in his throat to relieve PD of the throat (which is hereditary in their family) Will let you all know how he does with it and if he gets his singing voice back again. He has tried a little of my tincture and it does help to relax it alittle bit, but who knows how much he actually needs to bring him the whole way to normal. He may take some of my tincture with him to Nashville when he goes to see the specialist who is going to give him the injection..who knows, maybe a researcher will jump on the chance out there to test it.