Got this off a friends FB page....not sure exactly how it applies but figured maybe those using it might want to check into it just in case!
"For pet owners who use phenobarbital for seizures for their pets. Please be warned that phenobarbital has been mis-labeled with hydrocondone 10 mg./acetaminophen 500 mg. tablets basically Tylennol which is toxic and deadly to pets. If you suspect, please go to your pharmacist. Pets are dying from this mishap."
Sounds scarey!
ETA: I DID NOT check the validity of this claim soooo......