You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following has antiemetic action? and explain in detail?
ANSWER: (A) PropofolREF: Miller's Anaesthesiology 7th Ed Ch 25"A unique action of propofol is its antiemetic effect, which remains present at concentrations less than those producing sedation/'Propofol's antiemetic action may be explained by the decrease in serotonin levels it produces in the area postrema, probably through its action on GABA receptors. Two notable side effects of propofol are its antiemetic effect and a sense of well-being in patients. The antiemetic effect gives a special advantage in day care anaesthesia.