Symptomer på overdosis kan inkludere svimmelhed, tremor, hovedpine, træthed, krampeanfald, hallucinationer, konfusion, maveonde, anomalier i lever og nyre, krystalluri, hæmaturi.
Symptoms of overdose may include dizziness, tremor, headaches, tiredness, seizures, hallucinations, confusion, gastrointestinal upset, liver and kidney abnormalities, crystalluria, haematuria.