Mixed Agonist/Antagonist and Partial Agonist Opioid Analgesics The concomitant use of opioids with other opioid analgesics, including butorphanol, nalbuphine, pentazocine, may perhaps reduce the analgesic effect of oxycodone and acetaminophen tablets and/or precipitate withdrawal symptoms. Recommend patient to avoid concomitant use of these medicin… Read More