GHRP-2 vs Thymosin Alpha-1
Side-by-side comparison of key properties, dosing, and research.
Growth Hormone Peptides
GHRP-2Immune SupportAnti-Aging & Longevity
Thymosin Alpha-1- 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.
- Thymosin Alpha-1 is a naturally occurring 28-amino acid peptide derived from the thymus gland. It is a powerful immune modulator approved in many countries for treating chronic hepatitis B, hepatitis C, and as an adjunct in cancer immunotherapy.
- Half-Life
- 15–60 minutes
- 2–3 hours
- Admin Route
- SubQ, Intranasal
- SubQ
- Research
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- Typical Dose
- 100–300 mcg
- 0.8–1.6 mg
- Frequency
- 2–3 times daily
- Twice weekly
- 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
- Enhances T-cell and NK cell activity
- Supports recovery from viral and bacterial infections
- May reduce inflammation systemically
- Supports healthy aging and immune resilience
- Improves vaccine response
- Supports liver health
- May help with chronic fatigue syndrome and post-viral conditions
- Approved in multiple countries for hepatitis B and C treatment
- Side Effects
- Increased appetite
- Water retention
- Elevated cortisol (modest)
- Elevated prolactin (modest)
- +2 more
- Injection site irritation
- Mild flu-like symptoms initially (immune activation)
- Fatigue (rare)
- Stacks With
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