amount to give in b12 injection Vitamin Injections Dosage and Frequency Hydroxocobalamin (B12) Injection, 2mg/mL |

N Engl J Med 368:149-60, 2013 6

Vitamin B12, also known as cobalamin, is the largest and most complex vitamin out there

Common side effects include injection site pain, mild nausea, headache, and harmless reddish urine discolouration with hydroxocobalamin

These include: Neurological symptoms : tingling or numbness in hands and feet (peripheral neuropathy), difficulty walking or balance problems, memory difficulties, or mood changes including depression Haematological signs : persistent fatigue, weakness, pale or jaundiced skin, or shortness of breath Glossitis : a sore, red, smooth tongue Cognitive symptoms : difficulty concentrating, confusion, or "brain fog" Seek urgent medical attention if you experience rapidly worsening neurological symptoms, significant difficulty walking, severe paraesthesia, or marked cognitive decline, as these may require immediate assessment

So for the most common long-term situation, an absorption problem, maintenance means one injection every two to three months rather than anything weekly or monthly

Keeping your energy metabolism running efficiently