Yes, could be side effects. I have been on 6MP for several weeks and had some of those symptoms for a while that got better. I take mine after dinner at night so most symptoms are during sleeping or early morning and get better as the day goes on. I increased twice to 75 mg. and went back to 50 mg. but this time the increase did not affect me. Good to let your doctor know what is going on however.
ElaineNY