The author administered Tridione in four patients under five years of age with "petit mal" seizures. In all cases there was complete disappearance of the seizures eventhough small doses were used. In one case the EEG, taken after the Tridione treatment, did not show the previous "petit mal" pattern. In no case there were signs of intolerance. In conclusion the author thoroughly agree that Tridione is the drug of choice in "petit mal" seizures.