Use of Methadone as First Line Strong Opioid for Moderate-Severe Pain

Abstract

The present study evaluates the use of methadone in patients with advanced cancer and moderately-severe pain under palliative care at home over a period of 5 years, from 1996 to 2000. We calculated the index for methadone dosage increase (as a percentage and value in milligrams). Of the 1,079 patients cared for, 247 (22.89%) received methadone treatment: 126 from the very beginning, average dose of 15 mg / day (5- 50), and in 121 patients treatment with methadone was initiated at a later moment during the period they were cared for (5- 40). The median period of time of methadone administration was 27 days (1-416), the median dose of methadone at the moment of treatment discontinuation being 20 mg (5-60). The main reason for methadone treatment discontinuation was impossibility of oral administration (49.8% in terminal stages, 7.3% presenting nausea, vomiting), and 62.3% showed no side effects. Dosage increase index was 0.33 mg, 2.33% respectively. Methadone has been used mainly as a potent first line opioid, and has been shown to be effective and safe.