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Can I use Avinza if I take butorphanol?

In most cases, you should not use the painkiller Avinza (morphine) if you take butorphanol (Stadol). Avinza is an opioid drug and butorphanol is an opioid-blocker, so Avinza may be less effective or not work at all if you also take butorphanol. In addition to not getting adequate pain relief, you may experience withdrawal symptoms if you've been taking Avinza for a long time and then add butorphanol.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.