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You might get redness, swelling, or itching at the injection site
With that said, taking too much oral, intranasal, or intramuscular B12 may cause some of the following symptoms: Headaches Nausea and vomiting Diarrhea Tingling in the hands and feet Fatigue or weakness You should be aware of medication interactions with B12, such as metformin and proton pump inhibitors (PPIs)
Pre-calculated dosing instructions so you never guess at concentration math
View study Malinda KM, Goldstein AL, Kleinman HK, et al
GHK-Cu (copper peptide) is the star of the skin show
Vials required for a 12-week protocol Note: Two low-dose vials contain enough peptide by mass, but the 12-week schedule spans three 28-day refrigerated-use windows
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