Symptoms: Large doses produce excitement, incoordination, depression and convulsions in mice. Coma has also been reported.
Treatment: If ingestion is recent, forced emesis or gastric lavage should be performed and activated charcoal then given (0.5g/kg) which may considerably reduce absorption. Careful observation during the first few hours is recommended, as convulsions are most likely to occur during this period. Very high serum levels may be associated with repeated convulsions, which have been successfully suppressed with intravenous diazepam.