Does suboxone make anyone else feel extremely tired? like nodding off tired?

Rajive is correct on both points, and it could be caused by what you suspect and what he listed. It also could be caused from you having gone thru the anxiety and emotional upheaval of trying to decide if you needed it, what to expect at the doctor's office, what it would be like to be on it as well as just the stresses of life at this point. You also will probably go thru about a 2 week adjustment period of the medicine getting in your system and being off the other opiates. You may also get a huge energy burst soon and decide to either clean your house, work or do busy work or maintenance, these are all experienced by first time subs users early in treatment. Congrats on your new life. If this side effect bothers you, get worse, does not get better or you have any other side effects or problems, call and report these to your subs doctor.

Drowsiness is one of the many other side effects of taking suboxone, perhaps you should be able to get used to the med in a short while, if this side effect is too bothersome, please do talk to your doc/pharmacist who prescribed the med for alternate or change in dose. take care, be well & safe!