| Central nervous system |
Fear, hallucinations, restlessness, insomnia, coma, tremor, seizures, headache, photophobia |
| Cardiovascular system |
Arrhythmias (most frequently atrial or ventricular tachycardia), hypertension (or in severe cases hypotension), myocardial infarction, ischaemic stroke, collapse |
| Respiratory system |
Hyperventilation, acute lung injury |
| Gastrointestinal tract |
Nausea, vomiting |
| Kidneys |
Polyuric state, acute renal failure |
| Muscles |
Paralysis, rhabdomyolysis |
| Haematology |
Leucocytosis |
| Metabolism |
Hyperglycaemia, lipolysis, ketogenesis |
| Acid-base balance |
Lactic acidosis caused by hyperadrenergic state or by seizures or hypotension; respiratory alkalosis |
| Electrolytes |
Hypokalaemia, hyponatraemia |
