For consumers, that pricing premium is not always supported by the strength of the public clinical evidence
Unfortunately, its pharmacological utility is limited by a plasma half-life of only a few minutes, primarily due to (i) rapid N -terminal degradation by the exopeptidase dipeptidyl-peptidase-4 (DPP-4) and (ii) fast renal clearance of the small peptide [32]
Our blog has more resources comparing AHK-Cu vs GHK-Cu or GHK-Cu vs tretinoin if you want to learn about other options on the market
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An unusually cheap product is usually underdosed, impure, or both
References Kraus D, Yang Q, Kong D, et al