MOTS-c has promising metabolic biology but a limited therapeutic human safety database, so Clinician screening and a defined protocol are necessary. Important considerations include glucose regulation, diabetes medications, pregnancy status, active serious illness, and other metabolic or peptide therapies. With subcutaneous treatment, local irritation, redness, bruising, or tenderness can occur. Because human interventional data are still early, unexpected systemic symptoms should be taken seriously rather than assumed to be part of an adaptation process. Patients should contact the clinical team for persistent dizziness, weakness, unusual glucose symptoms, allergic reactions, or any significant change in how they feel during treatment.