Assertion: quinine's effect | /r/HasProperty | additive
Facets:
value: to those of quinidine
type: OTHER
Source sentences:
text: Because of the theoretical possibility of QT-prolonging effects that might be additive to those of quinidine, other antiarrhythmics with Class I (disopyramide, procainamide) or Class III activities should (if possible) be avoided.
text: Botanicals can alter the effect of drugs, resulting in an effect that is additive, synergistic, or one that has an antagonistic action.