Dear Editor,

We thank Dr. Mégarbane [1] for his interest in our letter [2].

The ingested dose was estimated by the discovery by the patient’s wife of an empty bottle of Colchimax 1 mg; probably other bottles had been hidden by the patient and were not discovered. Furthermore, the patient first confessed the isolated ingestion of Colchimax to all members of our medical team and then confirmed it to the psychiatric team. He related he did not remember the time and the ingested dose after the coma. Moreover, by virtue of his profession (pharmacist), he well knew the toxic effects of colchicine and the kinetics of these effects.

Colchicine intoxication is marked by a cardiovascular shock classically occurring between day 2 and day 7 as described by Megarbane (http://www.orpha.net/data/patho/FR/fr-colchicine.pdf). In our case, the ECLS could be removed at day 10, consistent with previous clinical description.

The journal’s word limits for correspondence prevented us mentioning the usual prognosticators in colchicine poisoning: prothrombin rate 10 % and leukocytosis 19,100/mm3 at day 2; transient bone marrow suppression: thrombocytopenia (44,000/mm3) and leucopenia (1,500/mm3) at day 5; and the alopecia that occurred at day 12. As we described, the patient required high doses of catecholamine without achieving a normal hemodynamic profile, for which reason we decided to use ECLS.