I Was Prescript Sedoxil Few Years Ago. I M Leaving

i was prescript sedoxil few years ago. i m leaving in a country were it isn't easy to receive treatments such psychiatrist. i had to quit my medication. but since then i have some kind of side effect i think... my jaw is very tense. waking up with jaw ache. went to the dentist, apparently i m grinning my teeth at night or pressing to hard.
my question is ... can i take sedoxil to help me relax at night pls?