GHRP-2 vs TB-500
Well Studied vs Well Studied
synergistic Mechanism-based · 47% GHRP-2 and TB-500 work through complementary pathways. Growth hormone signaling supports tissue repair processes. A well-established combination in recovery protocols.
Molecular Data
GHRP-2 TB-500
Weight 817.9 Da 4,963.44 Da
Half-life ~30 minutes ~2 hours
Chain 6 amino acids 43 amino acids
Type Synthetic hexapeptide Thymosin fragment
Key Benefits
GHRP-2
01 Potent stimulation of natural growth hormone release
02 Enhanced muscle growth and recovery
03 Improved body composition and fat metabolism
04 Better sleep quality and recovery
05 Increased appetite (can be beneficial for bulking)
06 Maintains natural GH pulsatile release patterns
07 Synergistic effects when combined with GHRH peptides
TB-500
01 Superior systemic tissue repair
02 Accelerated muscle, tendon, and ligament healing
03 Enhanced cell migration and angiogenesis
04 Comprehensive regenerative effects
05 Neuroprotective properties
Dosing Protocols
GHRP-2
100-300 mcg / 2-3x daily
GH optimization 100-150 mcg 2-3x daily
Enhanced results 200-300 mcg 2-3x daily
With GHRH (synergy) 100 mcg each 2-3x daily
Pre-sleep protocol 100-200 mcg Before bed
TB-500
2-5mg per injection (higher doses for serious injuries) / 2-3x weekly (e.g., Monday, Wednesday, Friday)
General tissue repair 2-3mg 2x weekly
Serious injury recovery 4-5mg 3x weekly
Athletic enhancement 2-3mg 2x weekly
Chronic conditions 3-4mg 2-3x weekly
Maintenance 2mg 1-2x weekly
Post-surgical recovery 3-5mg 3x weekly
Side Effects
GHRP-2
Increased appetite (less than GHRP-6)
Mild water retention
Tingling or numbness in extremities
Tiredness or lethargy after injection
Mild headache
TB-500
Generally minimal side effects
Possible mild injection site reactions
Temporary fatigue in some users
Contraindications
Active cancer or history of cancer
Pregnancy or breastfeeding
Pituitary disorders
Diabetic retinopathy
WADA prohibited for competitive athletes
Active cancer treatment (due to angiogenic effects)
Pregnancy or breastfeeding
Immunosuppressive medications (consult provider)
WADA prohibited for competitive athletes
Research Evidence
GHRP-2 TB-500
Status Well Studied Well Studied
References 3 studies 6 studies
Latest — November 2025
FDA Approved No No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.