ghk-cu injection uses Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy GHK-CU 100mg Research Peptide UK
Description
It is not a drug, food, dietary supplement, or cosmetic, and has not been approved by any regulatory authority
20 Doses of 1000mcg Vitamin B12 per vial  
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@PatriciaBrubaker Patricia Brubaker, Ph.D., F.R.S.C., F.C.A.H.S
This can be due to a number of reasons, such as a lack of B12 in the diet, reduced stomach acidity, or when particular cells in the stomach - the "parietal" cells - do not produce enough intrinsic factor
