Single arm, open label, multi-centre intervention trial to evaluate the tolerance and acceptability of a high energy, nutrient enriched infant formula.

1. Age 0 to 18 months (including 0 and 18 months);

2. 37 to 42 weeks gestation at birth;

3. Currently receiving a high energy, nutrient enriched infant formula (current Infatrini) for at least 7 days prior to the baseline visit (day -2);

4. Expected to require a high energy infant formula for at least 10 days after baseline visit;

5. Consuming, on average, at least 50% of their energy intake from the study feed;

6. Either enterally fed (naso-enteric tube, gastrostomy, jejunostomy) or orally fed (bottle fed);

7. Written informed consent from parents/ guardians that have legal custody of the child;

8. Parents/ guardians should have good knowledge of Dutch language.

1. Body weight > 9kg;

2. Proven cow‟s milk allergy;

3. Lactose intolerance;

4. Galactosaemia;

5. Other medical or dietary contraindication to a polymeric, high energy, nutrient enriched infant formula (eg major hepatic or renal dysfunction);

6. BMR vaccination performed within 14 days prior to baseline visit, any other vaccination performed within 48 hours prior to baseline visit or any vaccination planned within 10 days after baseline visit;

7. Any surgery planned within 10 days after baseline visit;

8. Investigator's uncertainty about the willingness or ability of the parent/caregiver to comply with the protocol requirements;

9. Participation in any other studies involving investigational or marketed products concomitantly or within two weeks prior to entry into the study.