Title
Switching From Morphine to Oral Methadone Plus Acetaminophen in the Treatment of Cancer Pain
Switching From Morphine to Oral Methadone Plus Acetaminophen in the Treatment of Cancer Pain: A Randomized, Double-Blind Study
Phase
Phase 2/Phase 3Lead Sponsor
Faculdade de Medicina do ABCStudy Type
InterventionalStatus
Unknown statusIndication/Condition
Cancer Pain Palliative CareIntervention/Treatment
acetaminophen methadone ...Study Participants
50The purpose of this study is to determine whether oral methadone plus acetaminophen can substitute morphine in the treatment of cancer pain.
Opioids are the mainstay of moderate-to-severe cancer pain management. Although morphine is the most commonly used, methadone has some advantages such as higher potency, lower cost and longer administration intervals. To minimize the time necessary to achieve the equianalgesic effect after a switching from morphine to methadone, acetaminophen was added in the treatment.
Methadone bid according to a established conversion morphine-to-methadone ratio plus Placebo or Acetaminophen qid
Inclusion Criteria: Clinical diagnosis of cancer pain Regular use of oral Morphine Exclusion Criteria: Use of Acetaminophen in the last 48 hours Renal or Hepatic failure