Buprenorphine/naloxone (Suboxone) is a combination of the active ingredient “buprenorphine” which helps prevent opioid withdrawal, craving, and overdose AND the inactive ingredient “naloxone,” which is not absorbed by the body and is added to the formulation to ensure that Buprenorphine/naloxone (Suboxone) is not misused. For example, if Buprenorphine/naloxone (Suboxone) were injected (not taken as it is supposed to), the naloxone would become active (absorbed by the body) and could cause opioid withdrawal symptoms.
If you are taking the medication as prescribed, buprenorphine-monotherapy (Subutex) to buprenorphine/naloxone (Suboxone) work the exact same way since the same active ingredient (buprenorphine) is being absorbed by the body.
So, if your medical provider transitions you from Subutex (just buprenorphine) to Suboxone (buprenorphine + non-absorbed naltrexone), your provider will simply replace one medication with another. As long as you are taking it as prescribed, your body should feel the same.