MOTS-c vs Thymulin
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.
Full details →Thymulin
Thymulin (Facteur Thymique Sérique) is a zinc-dependent nonapeptide hormone produced by thymic epithelial cells. It plays important roles in T-cell differentiation and immune system maturation.
Full details →Side-by-Side Comparison
| Aspect | MOTS-c | Thymulin |
|---|---|---|
| Dose Range | 5 mg–10 mg | 100 mcg–400 mcg |
| Frequency | Less than daily | 1x daily |
| Cycle Length | 8–12 weeks | 4–8 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. | Requires zinc for biological activity. Promotes T-cell differentiation, modulates cytokine production, and influences neuroendocrine function. Levels decline significantly with age. |
| Typical Dosage | Research protocols typically use 5-10mg administered subcutaneously several times per week. Optimal dosing not yet established. | Research protocols vary. Often studied alongside zinc supplementation. Typical research doses in the microgram range. |
| Administration | Subcutaneous injection. Often combined with exercise protocols as it enhances exercise capacity and metabolic adaptation. | Subcutaneous or intramuscular injection in research settings. Requires adequate zinc status for activity. |
| Side Effects | Limited human data. Animal studies show good tolerability. May affect energy levels and exercise performance. | Limited data on exogenous administration. Theoretical effects on immune function require monitoring. |
| Best For |
What They Have in Common
MOTS-c, Thymulin are both commonly used for:
Key Differences
Unique to MOTS-c:
Unique to Thymulin:
Which Has Stronger Evidence?
| Goal | MOTS-c | Thymulin |
|---|---|---|
| Anti-Aging & Longevity | medium | medium |
Key Studies
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
Thymulin
- Thymulin restrains age-associated myeloid inflammation and enhances cancer immunotherapy.
Nature communications, 2026
- Thymulin and peroxiredoxin 6 have protective effects against streptozotocin-induced type 1 diabetes in mice.
International journal of immunopathology and pharmacology, 2021
- Nanoparticle-based thymulin gene therapy therapeutically reverses key pathology of experimental allergic asthma.
Science advances, 2020
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