Assertion: promethazine's effect | /r/HasProperty | responsible for antiemetic activity
Facets:
Source sentences:
text: Phenothiazine derivative; blocks postsynaptic mesolimbic dopaminergic receptors in the brain; exhibits a strong alpha-adrenergic blocking effect and depresses the release of hypothalamic and hypophyseal hormones; competes with histamine for the H 1 -receptor; muscarinic-blocking effect may be responsible for antiemetic activity; reduces stimuli to the brainstem reticular system