Funding information No specific funding was received for preparing this correspondence. We read with interest the multicentre study by Shabaka et al, which associates extracorporeal treatment (ECTR) with fewer persistent neurological sequelae after lithium poisoning. Among 268 patients, 108 received ECTR, and the adjusted odds ratio for sequelae was 0.20 (95% confidence interval 0.09–0.45).1 This important observation addresses an outcome more meaningful than lithium clearance alone.