Bariatric surgery is the most effective long-term therapy for the management of patients with obesity but all bariatric surgical procedures have the potential to cause clinically significant micronutrient deficiencies due to reduced food intake, decreased gastric acid and intrinsic factor secretion, poor food choices and food intolerance. For clinicians, the acquisition of special knowledge is required in order to deliver appropriate and effective care to the post-bariatric patient. In the present article, we summarize existing recommendations for monitoring and replacement of vitamins and minerals following bariatric surgery.