OUTLINE: This is a double-blind, placebo-controlled, randomized, multicenter study. Patients are stratified according to type of adjuvant treatment (radiotherapy vs parenteral chemotherapy vs oral therapy vs combined modality), age (40 and under vs 41 to 55 vs 56 to 70 vs over 70), and numerical analogue scale for sleep difficulty (mildly impaired sleep quality [4-7] vs moderate or severely impaired sleep quality [8-10]). Patients are randomized to 1 of 2 treatment arms.