A Study to Evaluate the Effects of a New Formula on the Growth, Safety and Tolerance of Infants With Growth Failure

Inclusion Criteria: 1. Infants must have attained term gestation (≥37 weeks of gestational age) at the time of screening 2. Infants, male or female, aged 1 through 8 months 3. Infants with congenital heart disease or other organic/non-organic cause of growth failure with a weight-for-length z score ≤ -1.0 or weight gain ≤ -2.0 z score based on WHO growth standards. (for weight gain metrics please see Appendix I): Weight gain (g) for boys and girls by age ( -2 z scores for weight velocity). Infants with Down syndrome must have a weight for length z-score ≤-1.0 z score. Infants with Down syndrome who meet the weight gain criterion (≤ -2.0 z-score weight gain) and have a weight for length z-score \>-1.0 z-score will not be eligible for enrolment. 4. Infants expected to consume (or obtain via tube feeding), on average, 80% of their total energy intake from NF for 16 weeks 5. Infants from families who are willing and able to have anthropometrics taken at the required frequency as well as to comply with all other protocol requirements 6. Written informed consent from the parent/caregiver or legal guardian 7. Parent/caregiver or legal guardian must be able to read, write, and understand English Exclusion Criteria: 1. Infants with known or suspected complex gastrointestinal anomalies or dysfunction, hepatic\* or renal\* dysfunction, or inherited metabolic disorders, congenital neurological insults, suspected or diagnosed conditions associated with malabsorption (e.g. cystic fibrosis) 2. Infants with known or suspected systemic or congenital infections (e.g. human immunodeficiency virus, HBV, HCV) 3. 3\. Infants with known or suspected genetic conditions listed in Appendix VI and/or metabolic conditions known to interfere with growth or body dysmorphology that can interfere with obtaining standard anthropometric measurements (weight, length, head circumference, and mid upper arm circumference), with the exception of infants diagnosed with Down syndrome who may be enrolled in the study 4. Infants with known or suspected cow milk allergy or children who have received cow milk formula for 7 days or less 5. Infants expected to consume on average more than 20% of their energy intake from non-NF sources of nutrition: solids, expressed breast milk and /or parenteral nutrition. 6. Child feeding directly at the breast more than twice per day 7. Infants participating in any other studies involving investigational or marketed products concomitantly or within two weeks prior to the entry into the study. Infants participating in vaccination trials, who are only receiving follow-up blood monitoring, are not excluded. 8. Principal Investigator's uncertainty about the willingness or ability of the parent/caregiver or legal guardian to comply with the protocol requirements 9. Infants whose parent is younger than the legal age of consent 10. Infants born large for gestational age (LGA). LGA: Birth weight \> 90th percentile for gestational age (please see chart in Appendix I) 11. Infants born small for gestational age (SGA). SGA: Birth weight \< 10th percentile for gestational age (please see chart in Appendix I) \* Note: For hepatic dysfunction, a conjugated bilirubin \>2.0 mg/dL and for renal dysfunction child should not meet any of the pRIFLE criteria for renal disease (estimated creatinine clearance decreased by 25% by the Schwartz formula or urine output \<0.5 mL/kg per hour over the previous 8 or more hours) or has chronic medical renal disease. In most children labs need not be obtained. These criteria only come into play when there is a consideration of liver or renal disease in the individual child.