GHRP-2 vs Lactoferricin
A detailed comparison to help you understand the differences and choose 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 →Lactoferricin
Lactoferricin is an antimicrobial peptide derived from lactoferrin, a protein found in milk and other secretions. It has potent antibacterial, antiviral, and antifungal properties.
Full details →Side-by-Side Comparison
| Aspect | GHRP-2 | Lactoferricin |
|---|---|---|
| Dose Range | 100 mcg–300 mcg | 100 mcg–500 mcg |
| Frequency | 3x daily | 1x daily |
| Cycle Length | 8–12 weeks | 2–4 weeks |
| Route | subcutaneous | subcutaneous |
| 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 and disrupts microbial membranes through electrostatic interactions. Also binds to lipopolysaccharide (LPS) to neutralize endotoxins and has immunomodulatory effects. |
| Typical Dosage | Typical dosing: 100-300mcg administered 2-3 times daily. Often stacked with GHRH peptides for enhanced GH release. | Research applications vary widely. Oral lactoferrin supplements (containing lactoferricin precursor) typically dosed at 100-400mg daily. |
| Administration | Subcutaneous injection on an empty stomach. Can be used at bedtime to enhance natural GH pulse during sleep. | Available through lactoferrin supplementation orally. Purified lactoferricin primarily used in research settings. |
| Side Effects | Moderate hunger increase, water retention, potential prolactin and cortisol elevation (less than GHRP-6), tingling sensations. | Lactoferrin supplementation is generally well-tolerated. May cause GI upset in some individuals. Derived from milk so caution with dairy allergies. |
| Best For |
Key Differences
Unique to GHRP-2:
Unique to Lactoferricin:
Key Studies
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
Lactoferricin
- Lactoferricin enables adenovirus infection of human skeletal muscle cells.
Npj viruses, 2025
- Lactoferricin, an antimicrobial motif derived from lactoferrin with food preservation potential.
Critical reviews in food science and nutrition, 2024
- Expression and antimicrobial activity of the recombinant bovine lactoferricin in Pichia pastoris.
Synthetic and systems biotechnology, 2024
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