Assertion: drug | /r/CapableOf | block the effect of histamine
Facets:
value: on the stomach
type: TRANSITIVE-OBJECT
Source sentences:
text: The contribution of the British pharmacologist Sir James Black to this field led to the development, first, of drugs that selectively block the effects of epinephrine and norepinephrine on the heart (beta blockers, or beta-adrenergic blocking agents) and, second, of drugs that block the effect of histamine on the stomach (H 2 -blocking agents), both of which are of major therapeutic importance.