Why Copper Content Matters (And Why Most Suppliers Ignore It) One of the largest sources of inconsistency in GHK-Cu research is variability in actual copper content across suppliers
However, always consult your healthcare provider before combining supplements, especially if you are on medication
If the return is due to the customers reason, such as ordering the wrong item, changing your mind, or no longer needing the item, the original shipping fee and the return label fee will be deducted from your refund amount
Mayo Clinic Press
Despite encouraging results, we acknowledge limitations inherent in our study design, including the use of an animal model that does not fully replicate human UC, a relatively short observation period, and the exclusive use of male rats, potentially introducing gender bias
However, the dose and frequency for glutathione can vary from person to person according to their needs