A

Afghanistan

Albania

Algeria

Andorra

Angola

Antigua and Barbuda

Argentina

Armenia

Australia

Afentanyl - IV
Buprenorphine - PO(SL with naloxone),IV,TD
Codeine - PO,IV
Fentanyl - IV,TD, buccal
Hydromorphone - PO,IV
Methadone - PO,IV
Morphine - PO,IV;IR,SR
Oxycodone - PO;IR,SR
Pethidine - IV
Tramadol - PO,IV;IR,SR

Contributor: Meera Agar

Austria

Azerbaijan