The present study is designed to determine the gastrointestinal tolerability of enteral nutritional products, physicians and parents' overall perception of enteral nutrition products as well as providing basic demographic information on pediatric populations prescribed these formula for supportive treatment as part of the routine healthcare service in Turkey.

Inclusion Criteria:

• Age; 1-10 years (inclusive)
• Children diagnosed as failure-to-thrive(FTT).
• Children who have been recently prescribed and treatment initiated with isocaloric or hypercaloric high-fiber pediatric enteral formula suitable for oral and/or nasogastric tube feeding before inclusion in the study.

Exclusion Criteria:

• Chronic renal disorder
• Decompensated liver disease
• Any other chronic condition that was not under control (e.g. diabetes, thyroid disorder, etc.)
• Any type of malignant disease including leukemia and lymphoma
• Cystic fibrosis
• Short bowel syndrome
• Any type of food allergy or intolerance
• Growth hormone deficiency
• Use of enteral feeding within the last 4 weeks

Children diagnosed with failure to thrive who are receiving a high-fiber enteral formula for supportive treatment as part of the routine healthcare service in Turkey.