This clinical trial studies the use of early oral supplementation in improving nutritional status in participants undergoing hematopoietic stem cell transplant. Impaired nutritional status in participants undergoing hematopoietic stem cell transplant has been linked to decreased outcomes such as increased length of hospital stay and increased time to engraftment (an important milestone in transplant recovery). Early oral supplementation may increase nutritional status and help to promote a positive outcome in participants undergoing transplant.