A 76-year-old man with a history of alcoholic liver disease and renal insufficiency, who mistakenly ingested Colchicum autumnale instead of wild garlic (Aliium ursinum), presented with nausea, vomiting and diarrhea 12 hours after ingestion.
[...]
We can only speculate about the colchicine amount ingested by the patient. The remaining plant that the patient brought to the Emergency Department weighed around 5 g. The colchicine content of autumn crocus is 0.1–0.6% [14]. The total colchicine dose ingested by the patient could be calculated as follows: 2 (plants) × 5 g (weight of the plant) × 0.1–0.6% (content of colchicine in the plant)/73 kg (patient's weight). The estimated colchicine dose ingested by the patient was between 0.14 mg/kg (10 mg) and 0.82 mg/kg (60 mg).
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC420069/

Samozrejme problemy s pecenou/oblickami + vek vyrazne zavazia, ale davka 0.8 mg/kg sa spomina ako fatalna.
https://en.wikipedia.org/wiki/Colchicine