The objective of this study is to verify changes in protein metabolism after ingesting a oral medical nutritional supplement.

Inclusion Criteria:

• Male and is ≥ 60 and ≤ 90 years of age.
• Body Mass Index (BMI) > 20.0, but < 35.0.
• Ability to climb a flight of 10 stairs or walk an equivalent of city block without help within the 3 months prior to enrollment.
• Refrain from taking any dose of NSAIDs or acetaminophen on the day of and 24 hours prior to Visit 2 and Visit 3.
• Refrain from using any pulmonary maintenance medications on the days of Visit 2 and Visit
• Refrain from intense physical activity between visits.

Exclusion Criteria:

• Systemic corticosteroids within the 3 months prior to enrollment.
• Blood thinner or anticoagulant medication within 1 week prior to enrollment.
• Glomerular filtration rate (eGFR) of < 40 mL/min/1.73m2.
• Antibiotics within 1 week prior to enrollment.
• Major surgery less than 3 months prior to enrollment in the study.
• Active malignant disease or treated within the last 6 months for cancer.
• Immunodeficiency disorder.
• Diabetes
• Myocardial infarction 3 months prior to enrollment.
• Chronic obstructive pulmonary disease
• History of allergy to any of the ingredients in the study products.
• Conditions precluding ingestion or absorption of the study product, inflammatory bowel disease, short bowel syndrome, or other major gastrointestinal disease.
• Dementia, brain metastases, eating disorders, history of significant neurological or psychiatric disorder, or any other psychological condition.
• Pursuing weight loss or weight gain.
• Medications/dietary supplements/substances that could modulate metabolism or weight.