Common and Rare Adverse Reactions Most people dont have side effects from B12 injections
In rare cases, a long-standing B12 deficiency can affect the optic nerve, potentially causing blurred or double vision
Even if the FDA ultimately softens its position on some peptides, that process still requires formal review, recommendations, and regulatory action
[51] Diagnosis According to one review: "At present, no 'gold standard' test exists for the diagnosis of vitamin B 12 deficiency and as a consequence the diagnosis requires consideration of both the clinical state of the patient and the results of investigations." [52] The vitamin deficiency is typically suspected when a routine complete blood count shows anemia with an elevated mean corpuscular volume (MCV)
If they have, the peptides may have gotten too warm
You can self-administer the injection as well after that