<prompt> Weight gain caused by antipsychotics is due to antagonism of:5 HT35 HT2A5 HT2B5 HT2C  <response>: Ans. D 5HT2C Ref: Goodman Gilman 12e p435Antipsychotics cause weight gain due to their antagonistic action on H1 and 5HT2C receptors. 