Amneal Pharmaceutical. I never receive the branded product anymore and both should work the same. If the dose you’re receiving isn’t holding you an increase is necessary. I was started on 15mcg/7 days but after a week it wasn’t strong enough and was increased to 20mcg/7 days. The system docs must use when converting a patient from an oral narcotic is called MME (morphine med equivalent) that requires docs to begin low and go up. I love being on this as my primary pain control.