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[14] Similarly, women who are breastfeeding should refrain from using Lipo-B injections

Foundational Research (Maquart et al., 1988): The earliest evidence for GHK-Cu's role in collagen synthesis comes from laboratory studies demonstrating that the tripeptide-copper complex directly stimulates collagen production in human fibroblast cultures

The rationale behind combining them is rooted in cellular metabolism

Cyanocobalamin injection: Uses, side effects & warnings

Ans : Excess use may lead to mild side effects

Chemical substances shall not be used as a drug, medicine, active substance, medical aid, cosmetic product, a substance for production of a cosmetic product neither for human consumption that is any food or food supplement or otherwise similarly used on humans or animals