accutane vs ghk cu Tretinoin AHK-CU vs. GHK-CU – Neurogan
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10.1038/srep18398 108 ZhangT.YangC.ChuJ.NingL.-N.ZengP.WangX.-M.et al (2021b)

Yes and the evidence is clear

I dont want it contaminated with mercury and other things
These effects are particularly noticeable in individuals with a B12 deficiency or conditions like chronic fatigue syndrome or anemia, where long-term treatment can significantly improve quality of life

It is a synthetic form of B12 that contains a cyanide moleculethough the amount is negligible and considered safe for use in food supplements by European food safety authorities

Zeruo et al., 2022)
