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However, some individuals may experience mild side effects, such as gastrointestinal discomfort, including bloating, nausea, or diarrhea

The key difference lies in their molecular structure: GHK-Cu contains glycine, histidine, and lysine, whereas AHK-Cu replaces glycine with alanine

[Oncotarget] 75

This allows the body to take full advantage of the vitamin's benefits, especially if you have malabsorption issues (such as those caused by digestive disorders, age, or certain medications)

In the course of the present study, the following inhibitors of glutamate dehydrogenase were identified: epigallocatechin-3-gallate (EGCG), hexachlorophene (HCP), bithionol (BTH), GW5074, CPD-3B, ebselenin, R162, and others(Table 3)

Additional assembly statistics are provided in Supplementary Tables 13