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These generally show continued safety, but definitive long-term studies don't exist

Theoretical concerns Copper accumulation: Each 2mg injection contributes about 0.03mg copper versus 0.9-2.2mg from daily diet

References PubChem search: AHK copper peptide PubMed: Ala-His-Lys copper peptide PubMed: copper peptides and extracellular matrix Research-use notice: Supplied strictly for lawful research, laboratory, analytical, educational, or R&D purposes where permitted by applicable law

Nature Medicine

1989;257:G344G349

Depovit B12 2 Ampoules SKU : DESCRIPTION: * Depovit B12 1000 (Vitamin B12 Long Acting) 5 ampoules of 1 ml