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Overdose symptoms by system

System	Minor or moderate overdose	Severe overdose
Cardiovascular	Cardiac dysrhythmia Hypertension or hypotension	Cardiogenic shock Cerebral hemorrhage Circulatory collapse
Central nervous system	Confusion Hyperreflexia Severe agitation Tremor	Acute amphetamine psychosis (e.g., delusions and paranoia) Compulsive and repetitive movement Serotonin syndrome (excessive serotonergic nerve activity) Sympathomimetic toxidrome (excessive adrenergic nerve activity)
Musculoskeletal	Muscle pain	Rhabdomyolysis (rapid muscle breakdown)
Respiratory	Rapid breathing	Pulmonary edema (fluid accumulation in the lungs) Pulmonary hypertension (high blood pressure in the arteries of the lung) Respiratory alkalosis (reduced blood CO2)
Urinary	Painful urination Urinary retention (inability to urinate)	No urine production Kidney failure
Other	Elevated body temperature Mydriasis (dilated pupils)	Elevated or low blood potassium Hyperpyrexia (extremely elevated core body temperature) Metabolic acidosis (excessively acidic bodily fluids)