Assertion: viagra's sildenafil | /r/HasProperty | administered to patient
Facets:
value: after careful benefit-risk assessment
type: TEMPORAL
Source sentences:
text: Concomitant use with alpha-blockers Caution is advised when sildenafil is administered to patients taking an alpha-blocker, as the co-administration may lead to symptomatic hypotension in a few susceptible individuals (see section 4.5).
text: Therefore sildenafil should be administered to these patients only after careful benefit-risk assessment.