MOTS-c vs Setmelanotide

A detailed comparison to help you understand the differences and choose the right peptide for your research goals.

MOTS-c

MOTS-c (Mitochondrial Open Reading Frame of the Twelve S rRNA type-c) is a mitochondrial-derived peptide that plays a key role in metabolic regulation and has emerged as a significant longevity research target.

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Setmelanotide

Setmelanotide (Imcivree) is an FDA-approved MC4R agonist for chronic weight management in patients with obesity due to specific genetic conditions (POMC, PCSK1, or LEPR deficiency).

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Side-by-Side Comparison

Aspect	MOTS-c	Setmelanotide
Dose Range	5 mg–10 mg	1 mg–3 mg
Frequency	Less than daily	1x daily
Cycle Length	8–12 weeks	12–52 weeks
Route	subcutaneous	subcutaneous
Mechanism	Activates AMPK pathway, enhances glucose uptake in skeletal muscle, improves insulin sensitivity, and regulates mitochondrial function. Acts as a metabolic hormone affecting whole-body energy homeostasis.	Selective agonist of melanocortin 4 receptors (MC4R) in the hypothalamus, restoring the satiety signaling pathway that is disrupted in certain genetic obesity syndromes.
Typical Dosage	Research protocols typically use 5-10mg administered subcutaneously several times per week. Optimal dosing not yet established.	Adults: Start 2mg daily, titrate based on tolerability up to 3mg daily. Pediatrics (6+): Weight-based dosing starting at 1mg daily.
Administration	Subcutaneous injection. Often combined with exercise protocols as it enhances exercise capacity and metabolic adaptation.	Subcutaneous injection once daily. Requires genetic testing to confirm eligible mutations before prescribing.
Side Effects	Limited human data. Animal studies show good tolerability. May affect energy levels and exercise performance.	Injection site reactions, skin hyperpigmentation, spontaneous penile erections, depression, and suicidal ideation (boxed warning). GI effects less common than GLP-1s.
Best For	Muscle Growth Fat Loss Anti-Aging & Longevity	Fat Loss