 BACKGROUND, SIGNIFICANCE, AND RATIONALE Failure to thrive or inadequate weight gain is a frequent complaint amongst patients seen by general pediatricians and pediatric gastroenterologists. The reasons behind this diagnosis vary widely including, but not limited to feeding disorders of diverse etiologies, poor environmental structure and inadequate intake, medication side effects, swallowing disorders, and a variety of underlying organic diseases. For most feeding disorders, behavioral feeding techniques and strategies to increase caloric intake is utilized to correct the suboptimal growth. However, feeding disorders are sometimes so imprinted that behavioral interventions may be insufficient to promote ideal growth or, if sufficient for growth, are inadequate in helping children avoid or graduate from nutritional support such as enteral tubes. For this reason, medications that promote and stimulate appetite and weight gain are frequently used in children with feeding disorders. 