Human Growth Hormone (HGH) vs MOTS-c
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Human Growth Hormone (HGH)
Human Growth Hormone (somatropin) is a 191-amino acid protein identical to naturally produced GH. FDA-approved for growth hormone deficiency, Turner syndrome, and other conditions. Widely used off-label for anti-aging and performance.
Full details →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.
Full details →Side-by-Side Comparison
| Aspect | Human Growth Hormone (HGH) | MOTS-c |
|---|---|---|
| Dose Range | 200 mcg–2 mg | 5 mg–10 mg |
| Frequency | 1x daily | Less than daily |
| Cycle Length | 12–24 weeks | 8–12 weeks |
| Route | subcutaneous | subcutaneous |
| Mechanism | Binds to GH receptors throughout the body, stimulating IGF-1 production in the liver. Promotes protein synthesis, fat metabolism, and cellular regeneration across multiple tissues. | 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. |
| Typical Dosage | Medical: 0.1-0.3mg/kg/week divided into daily doses. Anti-aging: 1-2 IU daily. Performance: 2-6 IU daily, sometimes higher. | Research protocols typically use 5-10mg administered subcutaneously several times per week. Optimal dosing not yet established. |
| Administration | Subcutaneous injection, preferably at night to mimic natural pulsatile release. Rotate injection sites. Store refrigerated. | Subcutaneous injection. Often combined with exercise protocols as it enhances exercise capacity and metabolic adaptation. |
| Side Effects | Joint pain, water retention, carpal tunnel syndrome, potential insulin resistance, and acromegaly features with long-term high doses. | Limited human data. Animal studies show good tolerability. May affect energy levels and exercise performance. |
| Best For |
What They Have in Common
Human Growth Hormone (HGH), MOTS-c are both commonly used for:
Key Differences
Unique to Human Growth Hormone (HGH):
Which Has Stronger Evidence?
- Muscle Growth: Human Growth Hormone (HGH) has stronger research support.
- Fat Loss: Human Growth Hormone (HGH) has stronger research support.
| Goal | Human Growth Hormone (HGH) | MOTS-c |
|---|---|---|
| Muscle Growth | high | low |
| Fat Loss | high | medium |
| Anti-Aging & Longevity | medium | medium |
Key Studies
Human Growth Hormone (HGH)
- Transgenic Artifacts Caused by Passenger Human Growth Hormone.
Trends in endocrinology and metabolism: TEM, 2018
- [Human growth hormone and Turner syndrome].
Anales de pediatria (Barcelona, Spain : 2003), 2017
- Significance of the disulphide bonds of human growth hormone.
Endokrynologia Polska, 2013
MOTS-c
- MOTS-c improves intrinsic muscle mitochondrial bioenergetic health and efficiency in a PGC-1α/AMPK-dependent manner.
Free radical biology & medicine, 2026
- MOTS-c attenuates lung ischemia-reperfusion injury via MYH9-Dependent nuclear translocation and transcriptional activation of antioxidant genes.
Redox biology, 2025
- MOTS-c: Magical Molecule for Diabetic Cardiomyopathy?
Cardiovascular drugs and therapy, 2025
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