well all drugs/meds have side affects and everyone has diffrent reactions to them. I dont know if nightmares is a comon one but i do know for a fact a couple meds that i was put on made me severly depressed and even kinda suicidal. and the latter isnt a comon side affect for most people.
I would make note and tell doc ... make sure it is in your file so that they all know teg affects you like this. It is importion to have it in your file so you can stay safe AND find reliefe to controll the pains..not add stress nightmares and such to the mix.
Keeping you in my healing thoughts and prayers.
Let us know what your doc says about this because it would be so helpfull to pass the info to others who might have same issues with teg. and or other meds.
Low pain and nightmare FREE wishes on you.
PEACE
BMW