GHRP-2 vs Human Growth Hormone (HGH) vs MOTS-c
A three-way comparison to help you find the right peptide for your research goals.
GHRP-2
Growth Hormone Releasing Peptide 2 (GHRP-2) is considered one of the most potent GHRPs available. It provides strong GH release with moderate hunger increase compared to GHRP-6.
Full details →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 | GHRP-2 | Human Growth Hormone (HGH) | MOTS-c |
|---|---|---|---|
| Mechanism | Binds to the ghrelin receptor (GHS-R) to stimulate GH release from the pituitary. Also has some direct effects on the hypothalamus. Causes less appetite increase than GHRP-6. | 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 | Typical dosing: 100-300mcg administered 2-3 times daily. Often stacked with GHRH peptides for enhanced GH release. | 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 on an empty stomach. Can be used at bedtime to enhance natural GH pulse during sleep. | 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 | Moderate hunger increase, water retention, potential prolactin and cortisol elevation (less than GHRP-6), tingling sensations. | 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
GHRP-2, Human Growth Hormone (HGH), MOTS-c are all commonly used for:
Key Differences
Unique to GHRP-2:
Unique to Human Growth Hormone (HGH):
Unique to MOTS-c:
Detailed Analysis
Commonalities
Both GHRP-2 and Human Growth Hormone (HGH) are commonly used for Muscle Growth, Fat Loss, Sleep Quality.
Which Should You Choose?
Human Growth Hormone (HGH) has stronger evidence for Fat Loss.
Commonalities
Both GHRP-2 and MOTS-c are commonly used for Muscle Growth, Fat Loss.
Which Should You Choose?
GHRP-2 has stronger evidence for Muscle Growth.
Commonalities
Both Human Growth Hormone (HGH) and MOTS-c are commonly used for Muscle Growth, Fat Loss, Anti-Aging & Longevity.
Which Should You Choose?
Human Growth Hormone (HGH) has stronger evidence for Muscle Growth, Fat Loss.