It can be a rapid, catastrophic loss of efficacy, rendering your research material essentially useless
Infection elicited autoimmunity and myalgic encephalomyelitis/chronic fatigue syndrome: an explanatory model

Sources: Pickart & Margolina, Int J Mol Sci 2018 (PMID: 29986520) | Pickart et al., BioMed Res Int 2015 (PMID: 26236449) Security Profile & Chemical Identity Molecular specifications and documented tolerance in clinical studies GHK-Cu Chemical Identity Natural copper complex of the tripeptide glycyl-L-histidyl-L-lysine GHK-Cu Tolerance & Status Safety data from clinical and cosmetic studies Published Clinical & Preclinical Data Key studies published in Int J Mol Sci, BioMed Res Int and dermatological journals -55.8% Reduction in wrinkle volume after 12 weeks of topical application of GHK-Cu cream Anti-Aging Results (12 weeks) 4 000+ Human genes modulated by GHK-Cu (31.2% of the genome) Genomic Impact + 70 % Increased collagen synthesis in human skin fibroblasts Collagen Stimulation Comparison Published Clinical & Preclinical Data Key studies published in Int J Mol Sci, BioMed Res Int and dermatological journals -55.8% Reduction in wrinkle volume after 12 weeks of topical application of GHK-Cu cream Anti-Aging Results (12 weeks) 4 000+ Human genes modulated by GHK-Cu (31.2% of the genome) Genomic Impact + 70 % Increased collagen synthesis in human skin fibroblasts Collagen Stimulation Comparison Important Notice Search Only Not intended for human consumption

Brekhman y Torres fueron los creadores de los inmunoterpicos adaptgenos cubanos, en 1977
This would mean you have to purchase them under a few rules: Not for human consumption Only for research purposes You can purchase from various retailers such as BiotechPeptides, Amino Asylum, PureRawz, etc