| Agitation (restlessness)* |
| Diaphoresis* |
| Diarrhea* |
| Disseminated intravascular coagulation† |
| Fever above 100.4° F (38° C) |
| Hyperreflexia* |
| Incoordination (ataxia)* |
| Mental status changes |
| Confusion* |
| Hypomania* |
| Multi-organ failure† |
| Myoclonus* |
| Ocular clonus |
| Rhabdomyolysis† |
| Shivering* |
| Tonic-clonic seizures† |
| Tremor* |