Participants in this single-arm study will consume an exclusive oral palatable elemental diet for 14 days. During the intervention period, participants will complete daily diet and symptom diaries and undergo study assessments, including questionnaires and biospecimen collection. After the 14-day diet period, participants will resume their usual diet and continue follow-up for 4 additional weeks.

The intervention is an exclusive oral palatable elemental diet administered for 14 consecutive days as the participant's sole nutritional intake. This amino acid-based formula was developed to provide an elemental diet with improved palatability and tolerability. Following completion of the 14-day diet period, participants will return to their usual diet and undergo 4 additional weeks of follow-up.

Completion is defined as completing at least 12 of the 14 study diet days during the exclusive palatable elemental diet period. The feasibility target is that at least 80% of participants meet this criterion.

Diet adherence is defined as consuming at least 75% of prescribed palatable elemental diet calories during the 14-day exclusive diet period, based on daily diary tracking. The feasibility target is that at least 75% of participants meet this criterion.

Acceptability will be assessed using participant-reported questionnaire items completed at Day 28. Items will assess organoleptic acceptability of the study diet, including appearance, smell, taste, aftertaste, and consistency, as well as overall acceptability. Responses will be summarized descriptively.