Prescriptions from Vet in CO

I have a dog who's been on pretty standard prescriptions (e.g. heartgard) and some more non-standard medication (e.g. phenobarbital for seizures) for years. I've been living in CO and taking her to the vet here for 4 years.

Recently, I moved to a new town and got a new vet closer to home. I had always used Chewy for her heartgard with no issues requesting a prescription renewal from my vet through them virtually. This new vet will not allow it – ok, I think I can deal for now.

Onto the next medication, phenobarbital. I have to fill this at a regular pharmacy (Kroger) because it's a controlled substance. I had always called my pharmacy directly and had them request a refill when I ran out from my vet.

For both medications listed above, my vet states they can't do anything except write a hand written prescription that I must drive to them to pick up and physically deliver to the pharmacy. They stated it's Colorado law. I've never once had to do this before, in this state or any other state I've lived in.

Is this real? That it's Colorado law that I MUST pick up my dog's prescription in person and deliver it to the pharmacy myself? How have my other vets in this state gotten away with it? Would love to hear anyone's experience with this.

I'm switching vets either way, they've messed up her medication twice now (including stating they didn't know my dog's proper dosage when it's in their own records). But I'd like to know if I'm going to deal with this same headache elsewhere.