Kate Radford: Nothing to disclose
Unauthorized drugs may also: lead to infections, allergic reactions, and other serious complications contain too much, too little, or none of the active ingredient contain unlisted, dangerous or unknown ingredients contain contaminants, such as solvents, heavy metals, particles (fibers, glass, plastic), or microbials (bacteria, fungi, endotoxins) be poorly or incorrectly labelled be improperly manufactured or stored interact with other medications or health products you may be taking
This is acceptable in many cases, but there are important caveats
StatPearls notes that high-dose oral B has been shown effective for maintenance, but recommendations are to always use the parenteral route in severe neurological manifestations
2015 GHK peptide as a natural modulator of multiple cellular pathways in skin regeneration BioMed Res Int Comprehensive analysis of GHK-Cu's role in stimulating collagen synthesis, ECM remodeling, and dermal repair through multiple signaling pathways