Suboxone for opiate withdrawals?

Yes but what is your plan for after that 8mg tab is gone? You've already stated that you were "very emotionally/mentally addicted", so what is your recovery plan after that one Suboxone? If you don't have some sort of treatment or support in place, you will relapse in no time. Recovery is more than just getting through the physical withdrawals, because it's the psychological that usually gets people anyway.