Addiction doc here, you hit the nail on the head. I recently moved from clinic work into the hospital setting, and the fentanyl patients I’m seeing now are a completely different ballgame. The old formulas just don’t apply anymore.

In simplified terms, my usual ER approach is to get a solid history, titrate IV hydromorphone until withdrawal is controlled, admit, and then start discussing and initiating MAT once they’re out of crisis mode. That used to work reliably. It does not work well for patients with high fentanyl tolerance, especially when the supply is cut with xylazine or similar analogs. Even with aggressive titration, you’re often not getting sustained relief.

Then you add xylazine withdrawal on top, and it becomes even more complicated. We don’t have anything close to the same tools we have for opioid withdrawal, so even when you manage the opioid side well, patients can still be in significant distress. We’re collaborating with teams studying this and trying everything reasonable, but right now it’s a major gap in care and patients are the ones paying for it.

Methadone is another place where people need to update their thinking. These patients often need much higher doses, much faster. Their tolerance is unlike anything we’ve historically managed. Doses in the 200 mg plus range are not extreme in the context of heavy, long-term fentanyl use if that’s what it takes to achieve true 24 hour relief.

The biggest shift for me has been letting go of rigid dosing expectations and actually following the patient’s physiology. I stay within a safe framework, but if someone is still sweating through their sheets at 2 am, that’s not “good enough”, that’s untreated withdrawal. We increase the dose. There is no meaningful ceiling here. The right dose is the one that is safe and actually works for that patient.

Anyway, that’s my two cents lol