plumbus-nine
Bluelighter
There are three subtypes of opioid receptors (and sub-subtypes), mu, delta and kappa. Mu is the primary one which mediates the effects of opiods and many opioids are selective for mu. Buprenorphine also antagonizes at least kappa, if not delta too. Blocking kappa seems to have beneficial effects as it gets activated in times of stress and addiction and mediates negative emotions (very simplificated). Also on the mu, buprenorphine is only a partial agonist. This causes precipitated wd when one has a full agonist in his/her system which gets displaced by bupe (it has a strong affinity to mu) and there is a sudden reduction of mu activity.I personally never understood the chemistry behind Suboxone. It's an opioid agonist and antagonist rolled into one, so you're basically half high and half in withdrawal.
I would rather either take Naloxone alone, or taper myself off with a weaker opioid.
Bupe alone doesn't keep you in withdrawal, there is an initial adjustment period due to the change from full to partial agonist but thats it, and over after some time.
Naloxone is only in there to deter abuse (with routes like nasal, iv etc. its bioavailability is much higher than the few percent with oral dosing). It also lasts only a hour, so isn't a good candidate for ultra-low dosing like people do with the cousin naltrexone. Never tried it but many says it works against tolerance.