You should contact your GP if: You have been found to have elevated B12 levels on blood tests, particularly if levels exceed 1000 ng/L (approximately 740 pmol/L, though laboratory reference ranges vary) and you are not taking high-dose supplements You develop new symptoms after starting B12 supplementation, including persistent skin rashes, significant gastrointestinal disturbance, or unexplained symptoms You have underlying liver disease, kidney problems, or blood disorders and are considering B12 supplementation You are taking B12 supplements without medical supervision and have not had your levels checked, particularly if taking doses exceeding 2000 micrograms daily You experience symptoms that might indicate underlying disease, such as unexplained weight loss, persistent fatigue, jaundice, or abdominal swelling Call 999 or go to A&E if you develop severe allergic reactions following B12 injections, including difficulty breathing, facial swelling, or widespread rash, as these may indicate anaphylaxis, though this is extremely rare

GHK-Cu 100mg High-Purity Copper Peptide GHK-Cu (Copper Tripeptide-1) is a naturally occurring peptide complex first identified in human plasma, characterised by its ability to bind copper ions
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No artificial dyes or added colorants No parabens No phthalates Phosphatidyl Choline is derived from Non-GMO soy Each ingredient was selected for safety, performance, and skin compatibility - backed by clinical science and compounding best practices
Rogan says that exogenous ketone supplementation provides him with a source of clean energy. He also believes that the ketones help him stay sharp without the crash that often follows caffeine consumption
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