Sterile water works for single-use but provides no protection against contamination over multiple doses
Those following a vegan or strict plant-based diet are more likely to suffer from vitamin B12 deficiency
Methylcobalamin is the active form of B12, allowing your body to utilize it easily
Unlike vitamins or minerals, peptides are large, fragile molecules typically degraded in the digestive system before they can exert systemic effects
However, as reassuring as all of this is, there are a couple of things to remain mindful of: Copper toxicity Because GHK-Cu contains copper, it does pose a potential risk of copper toxicity,12 the symptoms of which include abdominal pain, vomiting, chest pain, chills, cough, fever, general weakness, anemia, burning sensations, tremors, and a metallic taste in the mouth.13 The risk is small, as the concentrations of copper in the peptide are typically well within safe parameters, but its good to be aware of it