After the second cycle of chemotherapy the patient underwent a "wash out" period of 7 days without any intervention, and after that period she received placebo or Guaraná according to the cross over design after answering for the second time the questionnaires above (Day 29) and also the Common Terminology Criteria for Adverse Events v3.0 (CTCAE). After 21 days (Day 42) she was assessed again with the same questionnaires used in the second interview.