Answer:
yes it wont LIKELY kill you cheratussin's active contents include an opiate( codein ) a expectorant (guaifenesin) and a stimulant/decongestent (psuedoephedrine). Buprenorphine is a semi-synthetic opioid. Now its not a good idea to take a bunch of opiates and i assume thats why you have the suboxone but in general the only risk is respiratory depression as with all opiates but nothing crazy will happen.