Epithalamin vs GHRP-2
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Epithalamin
Epithalamin is a natural peptide extract from the pineal gland. It is the precursor compound from which the synthetic Epitalon was derived. Known for anti-aging and telomerase-activating properties.
Full details →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 →Side-by-Side Comparison
| Aspect | Epithalamin | GHRP-2 |
|---|---|---|
| Dose Range | 5 mg–10 mg | 100 mcg–300 mcg |
| Frequency | 1x daily | 3x daily |
| Cycle Length | 1–2 weeks | 8–12 weeks |
| Route | intramuscular | subcutaneous |
| Mechanism | Similar to Epitalon, it stimulates telomerase production and may help maintain telomere length. Also regulates melatonin synthesis and circadian rhythms. | 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. |
| Typical Dosage | Research dosing: 10-20mg daily for 10-20 day cycles. Often administered 1-3 times per year in long-term protocols. | Typical dosing: 100-300mcg administered 2-3 times daily. Often stacked with GHRH peptides for enhanced GH release. |
| Administration | Intramuscular or subcutaneous injection. Natural extract may have more variable composition than synthetic Epitalon. | Subcutaneous injection on an empty stomach. Can be used at bedtime to enhance natural GH pulse during sleep. |
| Side Effects | Generally well-tolerated. May affect sleep patterns. Less characterized than synthetic Epitalon. | Moderate hunger increase, water retention, potential prolactin and cortisol elevation (less than GHRP-6), tingling sensations. |
| Best For |
What They Have in Common
Epithalamin, GHRP-2 are both commonly used for:
Key Differences
Unique to GHRP-2:
Which Has Stronger Evidence?
| Goal | Epithalamin | GHRP-2 |
|---|---|---|
| Sleep Quality | medium | medium |
Key Studies
Epithalamin
- Effects of melatonin and epithalamin on the content of protein and lipid peroxidation products in rat cortex and hippocampus under conditions of acute hypoxia.
Bulletin of experimental biology and medicine, 2012
- Effect of epithalamin on the rhythm of immune and endocrine systems functioning in patients with chronic coronary disease.
Bulletin of experimental biology and medicine, 2007
- Effect of epithalamin on circadian relationship between the endocrine function of the thymus and melatonin-producing function of the pineal gland in elderly people.
Bulletin of experimental biology and medicine, 2004
GHRP-2
- On the road of dried blood spot sampling for antidoping tests: Detection of GHRP-2 abuse.
Drug testing and analysis, 2021
- Effects of GHRP-2 and Cysteamine Administration on Growth Performance, Somatotropic Axis Hormone and Muscle Protein Deposition in Yaks (Bos grunniens) with Growth Retardation.
PloS one, 2016
- Ghrelin receptor agonist, GHRP-2, produces antinociceptive effects at the supraspinal level via the opioid receptor in mice.
Peptides, 2014
Ready to Learn More?
Looking for trusted sources?