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Serotonin Syndrome
Inform patients that opioids could cause a rare but potentially life-threatening condition resulting from concomitant administration of serotonergic drugs. Instruct patients to inform their healthcare provider if they are taking, or plan to take serotonergic medications [see Warnings and Precautions (5.7), Drug Interactions (7)].
Constipation
Advise patients of the potential for severe constipation [see Clinical Pharmacology (12.2)].
To report an adverse event related to a Pfizer product and you are not part of a clinical trial* for this product, click the link below to submit your information: Pfizer Safety Reporting Site
*If you are involved in a clinical trial for either product, adverse events should be reported to your coordinating study site.
If you cannot use the above website to report an adverse event related to a Pfizer product, please call Pfizer Medical Information at (800) 438-1985.
