In the past, I have massaged my jaw muscles, gently, or pressed firmly on
a particular sore
for 10 seconds, then released, and that would take away much of the tenseness so I could open my mouth again properly for eating apples etc.
What I am going to try, is doing this massage, and press and release technique, again, and see if my first bite for breakie tomorrow can be actually enjoyable, like it should!
Synthetic medicines for this? No thank you!