Clinical Trial of Blenderized Tube Feeds Varying in Viscosity

Who May Qualify: - age \> 1 year - \>90% of total calories via G-tube for \> 6 months - G-tube diameter ≥ 14 French - moderate severity of upper GI symptoms of nausea, bloating, postprandial fullness and early satiety defined as Gastroparesis Cardinal Symptom Index-Daily Diary (GCSI-DD) composite score \> 2 - anticipated stable GI-related medications for the duration of the study. Who Should NOT Join This Trial: - cystic fibrosis, primary ciliary dyskinesia, interstitial lung disease, bronchiolitis obliterans, or lung transplant - untreated malabsorptive intestinal disease (e.g. Crohn's disease, celiac disease) - Nissen fundoplication - use of non-standard enteral formulas (e.g. ketogenic formulas) for the management of metabolic, endocrine or neurologic rare diseases - allergy or intolerance to any component of the study diet - inability to tolerate bolus gastric feeds. Always talk to your doctor about whether this trial is right for you.