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Dimensions: 5 cm (L) 5 cm (W) 4 cm (H)

doi:10.1046/j.1365-2958.2001.02283.x
For adults, a common dosage is weekly injections of 1000 mcg (1 mg) of vitamin B12
GHK naturally occurs in human plasma at approximately 200 ng/mL in young adults, declining significantly with age (PMID 29986520)
