The present study aims to evaluate the patient profile including medical conditions who use a nutritional supplement along with a balanced and varied diet in Turkey.

Inclusion Criteria:

• Age ≥ 18 years old.
• Consuming amino acid containing oral nutritional supplement before enrolment for malnutrition for hard-to-heal wounds or malnutrition due to primary disease.
• Followed by internal medicine or surgery departments.

Exclusion Criteria:

• History of allergy or hypersensitive reaction to any ingredient in the amino acid containing oral nutritional supplement.
• History of any food allergy or intolerance

Subjects receiving amino acid supplement prior to enrollment