A common consequence of cancer treatment is the development of anticipatory nausea and vomiting (ANV).[19] This kind of nausea is usually elicited by the re-exposure of the patients to the clinical context they need to attend to be treated.[6] Approximately 20% of people undergoing chemotherapy are reported to develop anticipatory nausea and vomiting. Once developed, ANV is difficult to control by pharmacological means. Benzodiazepines are the only drugs that have been found to reduce the occurrence of ANV but their efficacy decreases with time.[8] Recently, clinical trials suggests that cannabidiolic acid suppresses conditioned gaping (ANV) in shrews.[20] Because ANV is widely believed to be a learned response, the best approach is to avoid the development of ANV by adequate prophylaxis and treatment of acute vomiting and nausea from the first exposure to therapy.[8][19] Behavioral treatment techniques, such as systematic desensitization, progressive muscle relaxation and hypnosis have been shown to be effective against ANV.[8][19]