- A score of at least 54 out of 88 on the combined relevant Profile of Mood States (POMS) subscales (Vigor, Fatigue, and Confusion) with no evidence that sedation results from cause other than opiate medication and patient reported using PRN opiates on at least 4 of the past 7 days (patients who are eligible for this study on the basis of POMS scores must be taking PRN medication)