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Health Topics/Analgesic/Central Nervous System Agent/Pharmacology/Opiate Agonists

Can I use Avinza if I take cimetidine?

Stacy Wiegman, PharmD
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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