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The effects generally last between 1 and 4 weeks, depending on your bodys metabolism, B12 usage, and the severity of the deficiency
Vitamin B12 injections are generally very safe
GHK-Cu is generally well-tolerated, but some individuals may experience mild or temporary side effects: Less common side effects may include: Most side effects are mild and resolve on their own
5 ResearchGate (2021)Combined NNMT inhibition and reduced-calorie diet normalizes body composition in obese mice
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