the mouse hot plate model , with slight differences from the way it is used to study narcotic analgesics , was evaluated as a method for determining the oral effectiveness , relative potency and duration of action of two standard narcotic antagonists , naloxone and naltrexone , and a new agent , 6-desoxy-6-methylene-naltrexone ( orf 11676 ) .
C0027358
naloxone
C0027360
naltrexone