There is no established tolerable upper intake level (UL), so even high-dose injections are safe because your system simply eliminates what it cannot use
The TGA said it has been alerted to severe allergic reactions that have led to hospitalisation, severe inflammation, full-body intense itching, palpitations, pain, insomnia, blurred vision and musculoskeletal injuries
B12 (cobalamin) is a water-soluble vitamin essential for neurological function, red blood cell formation, and DNA synthesis Joint pain is not listed as a recognised adverse effect in the BNF or licensed B12 product information When joint discomfort occurs after starting B12, it is typically coincidental or related to excipients, injection technique, or pre-existing conditions Severe B12 deficiency itself can cause neuropathic symptoms that may be misinterpreted as joint pain Do not discontinue prescribed B12 treatment without medical guidance, particularly for confirmed deficiency or pernicious anaemia Seek prompt medical advice for severe joint pain, hot swollen joints with fever, or symptoms of allergic reaction Table of Contents Can Vitamin B12 Cause Joint Pain
What distinguishes GHK-Cu from other bioactive peptides is its dual nature as both a naturally occurring component of mammalian plasma and a precisely engineered copper delivery system