GHRP-2 vs Carnosine
Side-by-side comparison of key properties, dosing, and research.
- Summary
- GHRP-2 is a potent synthetic hexapeptide that stimulates growth hormone release by activating ghrelin receptors in the pituitary and hypothalamus. It produces one of the strongest GH pulses among GHRPs, though unlike Ipamorelin it does cause modest increases in cortisol and prolactin.
- Carnosine is an endogenous dipeptide (beta-alanine + histidine) found in high concentrations in muscle and brain. It is a potent anti-aging molecule with broad spectrum antioxidant, anti-glycation, anti-carbonylation, and metal chelating properties, making it one of the most protective naturally occurring dipeptides.
- Half-Life
- 15–60 minutes
- ~1.5 minutes (rapidly hydrolyzed to beta-alanine and histidine by carnosinase in blood; tissue levels maintained via constant synthesis)
- Admin Route
- SubQ, Intranasal
- Oral, Topical
- Research
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- Typical Dose
- 100–300 mcg
- 1,000–2,000 mg
- Frequency
- 2–3 times daily
- Once to twice daily with meals
- Key Benefits
- Strong GH pulse stimulation
- Increased IGF-1 levels
- Enhanced muscle growth and recovery
- Improved fat metabolism
- Better sleep quality
- Increased bone density
- Enhanced appetite (less pronounced than GHRP-6)
- Anti-aging effects via GH axis optimization
- Potent anti-glycation (prevents protein cross-linking/aging)
- Broad-spectrum antioxidant in muscle and brain
- Extends cell lifespan and protects telomeres
- Improves muscle performance and delays fatigue (pH buffering)
- Neuroprotective against Alzheimer's amyloid-beta
- Wound healing acceleration
- Anti-cataract properties (eye health)
- Improves diabetes complications via AGE prevention
- Chelates excess copper and zinc
- Side Effects
- Increased appetite
- Water retention
- Elevated cortisol (modest)
- Elevated prolactin (modest)
- +2 more
- Very well tolerated
- Rare: mild GI discomfort at high doses
- No significant adverse effects in human studies
- Stacks With
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