Assertion: xanax's effect | /r/CapableOf | decrease to the level of placebo
Facets:
value: after 4–6 weeks
type: TEMPORAL
Source sentences:
text: CPA guidelines note that after 4–6 weeks the effect of benzodiazepines may decrease to the level of placebo, and that benzodiazepines are less effective than antidepressants in alleviating ruminative worry, the core symptom of GAD.