Assertion: ephedrine | /r/HasAspect | similar peak concentrations
Facets:
value: at 140 to 150 minutes
type: TEMPORAL
Source sentences:
text: Similarly, the combination of a single dose of ephedra and caffeine has been studied; ephedrine and pseudoephedrine had similar peak concentrations at 140 to 150 minutes, while caffeine blood levels peaked at 90 minutes.