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Increased blood concentration of homocysteine is another nonspecific biomarker of vitamin B 12 deficiency that has been linked to depressive symptoms in the elderly (108)

Additionally, AOD 9604 is generally considered safe for short-term use, but long-term safety has not been thoroughly established

Vials are more cost-effective, but you reconstitute them yourself with bacteriostatic water

Nexa Peptides provides high-purity, lyophilized GHK-Cu for these precise research applications, ensuring reliable and reproducible results in a laboratory setting

PMID 11304860