Arrhythmias and Conduction Defects as Presenting Symptoms of Fatty Acid Oxidation Disorders in Children Circulation Characteristics of included studies Download Table Systemic primary carnitine deficiency induces severe arrhythmia due to shortening of QT interval ScienceDirect Liquid L Carnitine 3000 delivers a powerful blend of three forms of L Carnitine to support fat metabolism, endurance, and recovery. Each serving packs 3000 mg in a fast absorbing, no mixing required liquid that