Blended Agonist/Antagonist and Partial Agonist Opioid Analgesics The concomitant usage of opioids with other opioid analgesics, like butorphanol, nalbuphine, pentazocine, may perhaps reduce the analgesic outcome of oxycodone and acetaminophen tablets and/or precipitate withdrawal symptoms. Advise patient to stay away from concomitant use of these d