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Watch for Signs of Copper Toxicity While GHK-Cu is generally well tolerated, overexposure to copper (especially in individuals with impaired detox pathways) can cause symptoms such as: Nausea or gastrointestinal upset Headaches Mood swings or irritability Metallic taste in the mouth If any of these symptoms occur, discontinue use and contact your healthcare provider

First Ill give you B1, then we do B2 a month later

Unlike oral supplements that may take weeks to absorb and are often less effective due to digestive limitations injectable B12 works quickly and efficiently

Some are absorbed so quickly that there is no enough time for a population of host cells to gather (Kawakami et al., 1997)