Blended Agonist/Antagonist and Partial Agonist Opioid Analgesics The concomitant use of opioids with other opioid analgesics, for instance butorphanol, nalbuphine, pentazocine, may decrease the analgesic influence of oxycodone and acetaminophen tablets and/or precipitate withdrawal signs or symptoms. Advise patient to stop concomitant use of those