Mountaindeweed, I'm sorry I've taken so long to tell you this; I keep forgetting. But for the vertigo, don't try tipping your head back. It takes a skilled practioner to assess where the crystals are and then that determines how your head is moved to fix the problem. Physical therapists, some occupational therapists and maybe some chiropractors (???) are trained in this. I was once upon a time but it was so long ago I can't give more information than this.