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Lundgren JR, Janus C, Jensen SBK, Juhl CR, Olsen LM, Christensen RM, et al

Quality Documentation 99%+ purity HPLC and Mass Spectrometry verified 2mg GHK-Cu per capsule Batch-specific COA included with every order USA tested and fulfilled Read the full GHK-Cu research overview For laboratory research purposes only

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Practical Guidance for Patients Already Taking Both If you are already taking B12 supplements and starting retatrutide, no change to your supplement routine is required unless your dose or form needs to be reassessed