Carnosine vs HGH Fragment 176-191
Side-by-side comparison of key properties, dosing, and research.
Anti-Aging & LongevityRecovery & Repair
CarnosineFat Loss & Metabolic
HGH Fragment 176-191- Summary
- 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.
- HGH Fragment 176-191 (also known as AOD-9604) is a stabilized, modified fragment of the human growth hormone molecule corresponding to amino acids 176–191 with an addition of a tyrosine residue at the N-terminus. It retains HGH's fat-burning properties without the anabolic, diabetogenic, or IGF-1-stimulating effects.
- Half-Life
- ~1.5 minutes (rapidly hydrolyzed to beta-alanine and histidine by carnosinase in blood; tissue levels maintained via constant synthesis)
- ~30 minutes
- Admin Route
- Oral, Topical
- SubQ
- Research
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- Typical Dose
- 1,000–2,000 mg
- 250–500 mcg
- Frequency
- Once to twice daily with meals
- 1–3 times daily
- Key Benefits
- 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
- Selective fat burning without anabolic side effects
- Reduces visceral and subcutaneous fat
- No insulin resistance or blood glucose disruption
- Does not stimulate IGF-1
- May support cartilage and bone repair (at higher doses)
- No effect on growth or organ size
- Side Effects
- Very well tolerated
- Rare: mild GI discomfort at high doses
- No significant adverse effects in human studies
- Injection site irritation
- Temporary lethargy
- Headache (rare)
- Nausea (rare)
- Stacks With
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