neurogan ghk-cu copper peptide Hair & Scalp Serum – 2400mg, 4% Copper Peptides – Fast-Absorbing, Water-Based Formula for Hair Softness & Shine Our old face cream was white and only 2400mcg—now it’s blue and measured in milligrams Neurogan - GHK-Cu (Copper Peptide)
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High performance liquid chromatography For measurements of HCY, cysteine (CYS), GSH, SAM and S-adenosyl-L-homocysteine (SAH), cell precipitates from aliquots A and B were diluted in Milli-q H 2 O 1:2 and the cells disrupted by three freeze/thaw cycles (20 to -20C)

Sadly, thats what I think

Older people with gastrointestinal problems are more susceptible to B12 deficiency, due to increased issues with absorption
