MOTS-c vs Hexarelin
Head-to-head comparison of MOTS-c and Hexarelin for research applications. Both peptides are studied for Anti-Aging, but they differ significantly in mechanism and evidence level.
Side-by-Side Comparison
| Attribute | Mots C | Hexarelin |
|---|---|---|
| Category | Metabolic / Mitochondrial | Growth Hormone Secretagogue |
| Mechanism | MOTS-c activates AMPK by inhibiting the folate cycle, causing accumulation of AICAR (an AMP analog). | Hexarelin binds to and activates the ghrelin/growth hormone secretagogue receptor (GHS-R1a) in the pituitary and hypothalamus through a triple mechanism: direct stimulation of pituitary somatotroph cells to release stored GH, stimulation of hypothalamic GHRH-releasing neurons, and suppression of somatostatin (the GH-inhibiting hormone). |
| Evidence Rating | D — Preclinical | C — Phase I–II Clinical Trials |
| Clinical Status | Research-only / No human clinical trials completed (Phase 1 of analog CB4211 only) | Phase II completed. Development discontinued due to tolerance/desensitization concerns. |
| Safety Profile | No adverse effects reported in preclinical animal studies; Human tolerability is completely unknown for native MOTS-c (no completed human trials) | Generally well-tolerated in clinical trials; Transient cortisol and prolactin elevation at higher doses |
| Molecular Weight | ~2174.6 g/mol | ~887 g/mol |
| Half-Life | Several hours; tissue effects may persist longer | ~70 minutes |
Overview
MOTS-c and Hexarelin are both research peptides studied across multiple applications. This comparison examines their mechanisms, evidence base, and safety profiles to help researchers understand the key differences and overlaps.
MOTS-c — Mechanism & Evidence
MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA-c) is a 16-amino-acid mitochondrial-derived peptide (MDP) encoded within the mitochondrial 12S rRNA gene (MT-RNR1). Discovered in 2015 by Lee et al. at USC, it acts as a metabolic regulator primarily through AMPK activation. In mouse models, MOTS-c prevents diet-induced obesity and insulin resistance, enhances exercise capacity (old mice ran 2x longer on treadmill tests), and reduces age-related metabolic decline. A modified analog (CB4211) showed good tolerability in a Phase 1 human trial. No clinical trials of native MOTS-c in humans have been completed.
Key claims: Improves insulin sensitivity and glucose metabolism; Exercise mimetic effects; Anti-obesity effects.
BPC-157 5mg
5mg
Retatrutide 20mg
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Hexarelin — Mechanism & Evidence
Hexarelin is a synthetic hexapeptide growth hormone secretagogue that binds to the ghrelin receptor (GHS-R1a). It is considered one of the most potent GHRPs available, stimulating greater GH release than GHRH alone. However, it causes relatively rapid receptor desensitization compared to milder GHRPs like ipamorelin, limiting cycle duration to 4-8 weeks. It also has notable cardioprotective properties independent of GH release.
Key claims: Potent GH release; Cardioprotective effects; Improves body composition.
Shared Research Applications
Both peptides are studied for: Anti-Aging.
MOTS-c is also researched for: Metabolic Health.
Hexarelin is also researched for: Body Composition.
Safety Considerations
MOTS-c: No adverse effects reported in preclinical animal studies Human tolerability is completely unknown for native MOTS-c (no completed human trials) Modified analog CB4211 showed good tolerability in Phase 1
Hexarelin: Generally well-tolerated in clinical trials Transient cortisol and prolactin elevation at higher doses Hunger increase (ghrelin receptor activation)
Shop Research Peptides
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Quality Documentation
Review batch documentation before making research purchasing decisions. Volta pairs product education with COA literacy so researchers can evaluate purity, identity, lot details, and testing context.
Product cards on this page link to current catalog entries and available quality documentation.
Related Research News
MOTS-c Half-Life: What Studies Show and What Remains Unknown
This reference clarifies what primary studies have established about MOTS-c half-life and stability, and identifies the pharmacokinetic questions that remain unanswered in humans.
MOTS-C and Metabolism: How Does MOTS-C Improve Endurance and Bone Strength?
Explore the preclinical science behind MOTS-C, a mitochondrial peptide investigated for its effects on metabolism, endurance, and bone strength.
MOTS-c: A Mitochondrial-Derived Peptide in Metabolic Regulation, Aging, and Physical Decline
Explore MOTS-c, a mitochondrial-derived peptide regulating metabolism, aging, and physical decline. Research findings for scientific study.
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