human bioavailability is unknown Subcutaneous injection Human subcutaneous bioavailability and pharmacokinetics are unknown Factor Convenience Oral capsules No mixing or syringe math Subcutaneous injection Requires reconstitution, sterile supplies, and injection-site planning Factor Evidence limits Oral capsules No controlled human dose, benefit, or safety trial Subcutaneous injection No controlled human dose, benefit, or safety trial Factor Can the amounts be treated as equal
Compound-Level Evidence GHK-Cu A 2018 review in the International Journal of Molecular Sciences synthesized gene-expression data showing GHK-Cu modulates over 4,000 human genes (Pickart and Margolina)
Glutathione, glutathione S-transferase, and glutathione conjugates, complementary [PMID: 22532120] Laboratory literature summary: Glutathione, glutathione S-transferase, and glutathione conjugates, complementary markers of oxidative stress in aquatic biota
They are meant to be part of a sustainable weight management program
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Im now seeing results after almost a year of treatment