V.M.
There are several homeopathic remedies that can be used for grinding teeth. The most obvious one is Kali-br 12C or Kali-br 30C. Don’t think Whole Foods sells this one. You can order on-line from a place with good customer service, Washington Homeopathic or any other similar places. Try 12C & 30C if one of this does not stop grinding – the problem is worthy of professional homeopathic attention.
Good Luck
V