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Methylphenidate
Acute Toxicity
OUSSAMA ALSERWY
Toxicokinetics
Routes of administration include oral,
inhalational and parenteral.
Metabolism is predominantly by the
liver into the inactive form ritalinic
acid.
Excretion is mainly by the kidney into
urine.
Pathophysiology
Mydriasis
Irritability, psychosis
Hyperthermia, Seizures
Tachycardia
Hypertension
Arrythmias
Tremors, Hyperreflexia
Abdominal pain,
Vomiting
↓ Sexual Impotence
Clinical Picture
Stimulant
Investigations
Toxicological Non-toxicological
No role for urine sampling
Confirmatory by HPLC, GC/MS
ABG-->> Normal
Electrolytes
CBC
Liver function tests
Blood glucose level
Coagulation profile
Renal function tests
ECG
CT brain
Treatment
Symptomatic Treatment
• Diazepam
• Phenobarbital
• Phentolamine
• CCBs
• Lidocaine
• Defibrillation
Methylphenidate acute toxicity

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Methylphenidate acute toxicity