Can I use Avinza if I take cimetidine?

Stacy Wiegman, PharmD

Pharmacy

You may be able to use the painkiller Avinza (morphine) if you take the antacid cimetidine (Tagamet), but your doctor may want to monitor their interactions closely. Together, they increase the possibility of serious breathing trouble. There is one report of a person who experienced sudden confusion, twitching muscles and the inability to breathe after taking these drugs in combination.

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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.