Fosamax has been directly linked to osteoporosis in the jaw, and that can definitely cause jaw pain. I would not recommend using this product for any reason, and try to find an alternative.
There are many causes as to how Jaw Pain can occur. Sleeping on one's side with resting the Ja on a hard surface can cause jaw pain. This can be severe, tingling pain to the right or left side. It...
Jaw pain in your face specifically could be caused from many things, ranging from teeth grinding when you sleep, to gum disease! It's hard to know, and it would probably be best to consult a dentist.