Assertion: promethazine's effect | /r/HasProperty | sustained
Facets:
value: for 4-6 hours
type: TEMPORAL
value: in child
type: LOCATION
value: respectively
type: DEGREE
Source sentences:
text: Antihistaminic and sedative effects are sustained for 4-6 hours and 2-8 hours, respectively.
text: Side effects usually reported are severe breathing problems or death in child younger than 2 years old.