Drug Interactions between Ifex and oxymorphone

Consumer information for this interaction is not currently available.

GENERALLY AVOID: Consumption of alcohol while taking immediate- or extended-release formulations of oxymorphone may result in high systemic levels of oxymorphone and fatal overdose even in opioid-tolerant patients. Additionally, alcohol may potentiate the central nervous system (CNS) depressant effects of opioid analgesics including oxymorphone. Concomitant use may result in additive CNS depression and impairment of judgment, thinking, and psychomotor skills. In more severe cases, hypotension, respiratory depression, profound sedation, coma, or even death may occur.

ADJUST DOSING INTERVAL: After oral dosing with 40 mg of oxymorphone hydrochloride in healthy volunteers under fasting conditions or with a high-fat meal, the maximum plasma concentration (Cmax) and systemic exposure (AUC) of oxymorphone were increased by approximately 38% in fed subjects compared to fasted subjects.

MANAGEMENT: Patients taking opioid analgesics including oxymorphone should not consume alcohol or use medications that contain alcohol. Modified and/or extended-release oxymorphone formulations must also be swallowed whole and not crushed, chewed or divided. In addition, oxymorphone should be administered on an empty stomach, at least 1 hour before or 2 hours after food intake.

Do not consume grapefruit or grapefruit juice while you are receiving treatment with ifosfamide, as this may decrease the anticancer effects of ifosfamide and may increase its adverse effects on your nervous system and your kidneys. Do not use alcohol while you are receiving treatment with ifosfamide. This may increase nervous system side effects such as somnolence, dizziness, confusion, difficulty concentrating, and impairment of thinking and judgment; and may also increase nausea and vomiting. Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. Also, avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medication without first talking to your doctor.