Assertion: melatonin's effect | /r/HasProperty | serious adverse
Facets:
Source sentences:
text: No studies have indicated that exogenous melatonin should induce any serious adverse effects.
text: Melatonin may enhance the adverse/toxic effect of imipramine.169
text: Although melatonin has no serious adverse effects, possible side effects include extreme drowsiness, dizziness, headache and nausea.