Can I use Actiq if I am taking nalmefene?

Nalmefene (Revex) may stop Actiq (fentanyl) from being effective and may lead to adverse side effects. Tell your doctor if you are taking nalmefene. Actiq is a synthetic opiate lozenge used to treat breakthrough cancer pain. Nalmefene is an opiate antagonist, meaning it blocks opiates. If you are taking Actiq and develop potentially dangerous side effects such as very low blood pressure or trouble breathing, your doctor may give you a drug such as nalmefene to reverse those side effects. If you have become dependent on opiates, nalmefene can lead to opiate withdrawal symptoms. It is a useful drug to treat adverse side effects of Actiq.

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