Oxytocin vs GHK
Side-by-side comparison of key properties, dosing, and research.
- Summary
- Oxytocin is a 9-amino acid neuropeptide produced in the hypothalamus with diverse roles in social bonding, trust, stress reduction, and sexual function. Exogenous administration is used therapeutically to improve social cognition, reduce anxiety, and enhance intimacy.
- GHK is the natural tripeptide (Gly-His-Lys) released from human albumin that activates tissue remodeling, collagen synthesis, and anti-aging gene expression. The copper-free form is the biological signaling molecule; it chelates copper in tissue to form GHK-Cu but also has independent biological activity.
- Half-Life
- ~3–5 minutes (IV); ~30–60 minutes (intranasal, CNS effects persist longer)
- Extremely short as free peptide; tissue binding extends local effects
- Admin Route
- Intranasal, SubQ, IV
- SubQ, Topical, Oral
- Research
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- Typical Dose
- 20–40 IU
- 100–500 mcg
- Frequency
- As needed (not daily long-term)
- Daily or 5x per week
- Key Benefits
- Enhances social bonding and trust
- Reduces social anxiety and fear of rejection
- Improves autism spectrum symptoms (social cognition)
- Reduces cortisol and stress reactivity
- Enhances sexual arousal and intimacy
- Promotes maternal behavior and bonding
- May improve depressive symptoms
- Appetite suppression and metabolic effects
- Stimulates collagen and extracellular matrix synthesis
- Activates tissue repair gene expression programs
- Anti-aging: reverses 57% of age-related gene changes
- Antioxidant and anti-inflammatory
- Wound healing and skin barrier repair
- Improves skin laxity, texture, and radiance
- Neuroprotective (stimulates NGF, BDNF)
- Anti-fibrotic in liver and lung models
- Side Effects
- Mild uterine cramping (avoid in pregnancy)
- Nasal irritation (intranasal)
- Headache
- Potential emotional over-attachment or jealousy amplification
- +2 more
- Excellent safety profile (naturally occurring peptide)
- Rare: mild injection site reaction (SC)
- No significant adverse effects identified in research
- Stacks With
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