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GHK-Cu (Gly-His-Lys-Cu2+, CAS 89030-95-5) is a tripeptide naturally present in human plasma, the levels of which decline with age
Glutathione, a powerful tripeptide naturally produced in the body, offers health benefits as a master antioxidant.* 21st Century's Glutathione 500 mg Plus Milk Thistle Extract & Alpha Lipoic Acid supports cellular detoxification, immune function and helps neutralize harmful free radicals.* Milk Thistle Extract and Alpha Lipoic Acid are added as complementary ingredients
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Metabolism 138 , 155346 (2023)
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