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If you do have decreased kidney function and your doctor recommends methylcobalamin, you may need a much higher dose because its less stable, so be sure to ask them about whats best given your condition
Research-grade GHK-Cu typically reports 99% purity by this method
Most community protocols settle on 2,000 mcg once weekly, injected subcutaneously
"The Effect of Topical Tripeptide-Copper Complex on Healing of Ischemic Open Wounds." Vet Surg
Net peptide content and purity are established by reverse-phase HPLC, with identity confirmed by mass spectrometry, and every lot ships with an independent Certificate of Analysis
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