Mixed Agonist/Antagonist and Partial Agonist Opioid Analgesics The concomitant usage of opioids with other opioid analgesics, for example butorphanol, nalbuphine, pentazocine, might lessen the analgesic outcome of oxycodone and acetaminophen tablets and/or precipitate withdrawal symptoms. Suggest patient to stay away from concomitant use of those d