Blended Agonist/Antagonist and Partial Agonist Opioid Analgesics The concomitant usage of opioids with other opioid analgesics, such as butorphanol, nalbuphine, pentazocine, could decrease the analgesic effect of oxycodone and acetaminophen tablets and/or precipitate withdrawal symptoms. Advise patient in order to avoid concomitant use of these dru… Read More