is b12 injection intramuscular or subcutaneous Vitamin Injections | B12 injections What happens if you inject

Solution measuring 0.1 ml was injected and the veins were biopsied at 4 weeks

These may include: Nausea and stomach upset Diarrhea Constipation Injection site redness or swelling Itching Headache Dizziness Blood clots Swelling In rare cases, some people may experience an allergic reaction to vitamin B12, which can cause symptoms such as hives, difficulty breathing, and swelling of the face, lips, tongue, or throat

Additionally, maintaining appropriate B12 levels helps promote cognitive health, potentially improving memory, concentration, and mood, and can even support emotional well-being by contributing to serotonin production in your brain

Heres a case of a 67-year-old man who reacted to a hydroxocobalamin B12 shot containing 1.5% benzyl alcohol