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AHK-Cu is a cosmetic topical not a drug so it is not subject to FDA drug approval

Both are available from Ascend Peptides UK to the same purity specification

However, if your B12 levels are healthy, a shot is unlikely to be the answer to your exhaustion, as fatigue has many other potential origins

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We are entirely dependent on dietary intake or supplementation, and even with adequate dietary intake, absorption can be impaired by a range of factors including age-related changes to stomach acid production, certain medications, and digestive conditions

Were exploring gut health, personalized nutrition, IV therapy, and yes B12 injections