My prescribing doctor says that the 32 mgs of Subutex I take uses all my pain receptors, so adding or replacing Subutex with stronger pain meds may not address the higher level of pain after an operation. Meanwhile, because I have that high level of chronic pain, stopping the subutex beforehand would be hard. In general, I worry about an unpremeditated rush to surgery and how to deal with that eventuality. Would adding percocet help? I don't believe it would send me into withdrawal, as one idiot pharmacist insists. A detailed analysis of the way buprenorphine works, alone or in combination with other pain medication would be helpful.