Calcium channel blockers poisoning can result in a severe condition. The study presents the case of a patient suffering from severe poisoning caused by diltiazem who developed a deep shock and multiple organ dysfunction. Hemodynamics instability may be refractory to the usual therapeutic measures, requiring the implementation of adjuvant therapy to support vital functions. The study examines the clinical presentation and pathophysiology of calcium channel blockers. Last, the therapeutic alternatives are presented based on current evidence.