Both the intensity and speed of development of symptoms depend on concentrations of the toxin in the mollusk digestive glands. No antidote is available after toxin ingestion and the specific treatment must be supportive. The ingestion without treatment has a mortality rate that can reach 60%. In our case, the onset and severity of symptoms corresponded to the maximum degree of TTX intoxication. Just before consumption, the shellfish was boiled for 45 minutes, but this failed to reduce toxicity as TTX is heat- stable, nor is it damaged by freezing [12].