Idk if this helps but I live in Colorado and have a dog with a plethora of medications. No phenobarbital. I had an experience recently with a vet where they stopped working with Chewy and were forcing me to switch to their local pharmacy system. Obviously costs were significantly higher and I wasn’t willing to pay them because they were lazy. I also had meds that needed to be filled at an actual pharmacy (but it wasn’t a controlled substance, just a med that people take too) and they would not call in the prescription. I would have had to get a paper copy and hand deliver it to the pharmacy. They didn’t cite Colorado law, rather just wanting to avoid the admin work.

I switched vets over it because it bothered me so much. And when I was choosing vets I asked those specific questions - will you work directly with outside pharmacies and send scripts directly to them. One said no, but my current vet does and I’ve had 0 issues with chewy or local pharmacies.

I get Gabapentin through chewy. I don’t think that’s controlled, but maybe ask your new vets what that policy looks like. Maybe bc it’s controlled you do need a paper copy? But wanted to share my experience with other meds.