Summary of Torsades de Pointes (TdP) Reports Associated with Intravenous Drug Formulations Containing the Preservative Chlorobutanol

ConclusionThe pharmacologic profile of chlorobutanol (synergistic IKR block) and its association with reports of TdP and QT prolongation suggest the need for a full evaluation of its cardiac safety when used as a preservative in IV drug and vitamin formulations.
Source: Drug Safety - Category: Drugs & Pharmacology Source Type: research