Blended Agonist/Antagonist and Partial Agonist Opioid Analgesics The concomitant use of opioids with other opioid analgesics, for instance butorphanol, nalbuphine, pentazocine, could reduce the analgesic impact of oxycodone and acetaminophen tablets and/or precipitate withdrawal indicators. Advise affected individual to stay away from concomitant u