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By the Premium UK Peptides Research Team Updated July 2026 8 min read GHK-Cu is a naturally occurring copper-binding tripeptide glycine, histidine, and lysine, bound to a copper (II) ion that the body already produces and circulates in plasma, saliva, and urine
109 ShenZ
Czechia Purity greater than 99.8 % confirmed by COA Assay content verified at 580 mg Identification confirmed by FTIR spectrum and retention time analysis Molecular ion mass identified at 307 Da Endotoxin level below 0.001 EU/mg No detectable heavy metals or microbial contamination Research-grade glutathione compound For research use only not for human or veterinary use For laboratory research only
There's no standard dosage for astaxanthin
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