Mixed Agonist/Antagonist and Partial Agonist Opioid Analgesics The concomitant use 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 individual to stay away from concomitant use of such med