Assertion: placebo's study | /r/CapableOf | involve 800 patients
Facets:
value: on 538 on placebo
type: OTHER
value: on amlodipine besylate
type: OTHER
Source sentences:
text: The antihypertensive efficacy of Amlodipine besylate has been demonstrated in a total of 15 double-blind, placebo-controlled, randomized studies involving 800 patients on Amlodipine besylate and 538 on placebo.