Stage Time Post Ingestion Signs Symptoms 1 1–6 hours Vomiting, diarrhea, GI bleeding, circulatory shock from hemorrhage and vasodilation Abdominal pain 2 6–12 hours Possible resolution of some signs based on treatment and dosage of poisoning Resolution of symptoms (considered a dangerous period if severe poisoning but if mild then may indicate a true turning point) 3 12–36 hours Metabolic acidosis, circulatory collapse, hepatic failure Renal failure D.I.C. Neurologic decline 4 2–6 weeks Signs of fibrosis at the pyloric region and elsewhere in the intestine with concomitant stenosis (narrowing)