Overdose and Treatment: 16 mg: A few overdose cases have been reported. Some patients experienced mild to moderate symptoms with doses up to 640 mg (e.g. nausea, somnolence, abdominal pain). Other symptoms of Betahistine overdose are vomiting, dyspepsia, ataxia and seizures. More serious complications (convulsion, pulmonary or cardiac complications) were observed in cases of intentional overdose of Betahistine especially in combination with other overdosed drugs. No specific antidote. Gastric lavage and symptomatic treatment are recommended within one hour after intake.
24 mg: Symptoms: A few cases of overdosage (up to 640 mg) have been reported. In one of the cases, nausea was observed.
Treatment: Treatment should include standard supportive measures.
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