[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][N][C][C][C][=Branch2][Ring1][=Branch1][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][#C][C][C][Ring2][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is only found in individuals that have used or taken this drug. It is a serotonin antagonist and a histamine H1 blocker used as antipruritic, appetite stimulant, antiallergic, and for the post-gastrectomy dumping syndrome, etc. Cyproheptadine competes with free histamine for binding at HA-receptor sites. This antagonizes the effects of histamine on HA-receptors, leading to a reduction of the negative symptoms brought on by histamine HA-receptor binding. Cyproheptadine also competes with serotonin at receptor sites in smooth muscle in the intestines and other locations. Antagonism of serotonin on the appetite center of the hypothalamus may account for Cyproheptadine's ability to stimulate appetite."}]