is 4.5 mg ghk-cu too much daily How Should I Inject Da GHK-CU vial dosage question :

Thymosin beta-4 research similarly demonstrates involvement in endothelial migration and angiogenic communication pathways

So at least with regard to those initial concerns of side effects, it doesnt look like thats actually a problem

The GSH and -GC concentrations (mg/L) of the sample were measured using the 4-fluoro-7-aminosulfonylbenzofurazan (ABD-F) derivatization method (Additional file 1: Figure S5) according to a previous report [29] with the reduced GSH as the standard

J., McCord, A

10.1016/j.phymed.2024.155554 Summary Keywords Chinese medicine, natural metabolites, CVDs, flavonoids, alkaloids, saponins Citation Liu X, Zhang W, Miao X and Hu Y (2025) Natural metabolites used in traditional Chinese medicine for cardiovascular diseases: pharmacological mechanisms, evidence, and future directions