For lyophilized GHK-Cu, stored in a freezer at -20C, you're looking at stability for perhaps 1-2 years, maybe even longer, if stored impeccably
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Jason Williams, PhD Reviewer Jason Williams is a distinguished neuroscientist with a PhD in neuroscience from Princeton University and reviewer at WholisticResearch
The mechanism leading to 5-oxoprolinuria is the following: decreased activity of 5-oxoprolinase leads to decreased conversion of 5-oxoproline to glutamate
The peptide may, however, play a valuable adjunctive role in post-surgical recovery when used under appropriate guidance
Glutathione Injections : For maximum bioavailability, intravenous glutathione injections offer direct absorption into the circulatory system, bypassing the gastrointestinal limitations of oral forms