Symptoms typically develop within 30 minutes of ingestion, but may be delayed by up to four hours; however, if the dose is fatal, symptoms are usually present within 17 minutes of ingestion.
Os síntomas aparecen xeralmente aos 30 minutos da inxestión, pero poden tardar ata catro horas; porén, se a dose é mortal, os síntomas preséntanse xa aos 17 minutos da inxestión.