Background: The novel drugs aprepitant (APR) and palonosetron are rec- ommended for the treatment of chemotherapy-induced nausea and vomiting. Here, we assessed the effects of these antiemetics using a self-report diary.Methods: This was a retrospective observational study based on data from 87 pa- tients spectively collected in 222 self-report diaries. We assessed the effect of vomiting and nausea on the patients'quality-of-life, and food and water intake. A“no event”was treated as a favorable outcome. We compared the rates of no event be-tween the first course of chemotherapy and subsequent courses, as well as among the different emetogenic risks and post-chemotherapy phases. We also studied the effect of APR in a subgroup of colorectal cancer patients receiving moderate emetogenic chemotherapy.Results: Nearly 90% of patients reported that the vomiting and nausea did not af- fect their quality-of-life