I’ve never taken stimulant medication but have had problems for years with jaw clenching in my sleep, and some serious TMJ pain. This also led to what I believe were bouts of trigeminal neuralgia, which were worsened by stress and fortunately passed. You never want this, I now know why it’s called ‘the suicide pain’.
My dentist eventually advised me to get a soft retainer, unfortunately not before I had ground down several of my teeth. The retainer doesn’t stop the clenching, but it can prevent damage. I also find upper body and face stretching exercises before bed helps too.