BPC-157 is generally well tolerated, but since its not approved as a drug, long-term human safety data is limited
Furthermore, research shows that BPC-157 can improve memory and locomotion and ameliorate neuronal damage in rats with stroke
The Bottom Line on AHK-Cu vs GHK-Cu AHK-Cu and GHK-Cu are closely related copper peptides with different research strengths

Research Verdict: When to Use Each or Both Choose BPC-157 When Research Focuses On: Gastrointestinal healing and protection Tendon and ligament injuries Nerve regeneration and neuroprotection Situations requiring oral administration Protection from NSAID or other toxic damage Choose TB-500 When Research Focuses On: Cardiac tissue repair and cardioprotection Wound healing and scar reduction Systemic anti-inflammatory effects Muscle regeneration Hair follicle research Consider Combination When: Comprehensive tissue repair is the goal (e.g., complex injury involving multiple tissue types) Maximizing angiogenesis AND cell migration is desired Research hypothesis involves sequential healing phases Mechanistic Rationale for Stacking: The combination addresses different phases of healingBPC-157 promotes blood vessel ingrowth and initial cytoprotection, while TB-500 facilitates the cellular repair and remodeling that follows vascularization

Another rapidly progressive manifestation of thiamin deficiency reported within the first six weeks after surgery is polyradiculoneuropathy, which resembles a longer-term disorder Guillain-Barr syndrome (GBS)
In cases of severe deficiency or malabsorption, its more effective to use a B12 injection