Seek prompt medical advice if you experience: Severe or rapidly worsening joint pain that significantly impairs function or mobility A hot, swollen, very painful joint with fever this could indicate septic arthritis requiring SAME-DAY emergency hospital assessment Symptoms of severe allergic reaction after B12 injection (breathing difficulty, facial/tongue swelling, widespread hives, dizziness/collapse) call 999 immediately Systemic symptoms such as unexplained weight loss, night sweats, or profound fatigue Neurological symptoms including weakness, numbness, balance problems, or cognitive changes Symptoms affecting multiple joints simultaneously, particularly if symmetrical (both hands, both knees) Morning stiffness lasting more than 30 minutes , which may suggest inflammatory arthritis Your GP will conduct a thorough clinical assessment, including detailed history-taking and physical examination
Vitamin B 12 is available only in animal foods (meat and dairy products) or yeast extracts (such as brewer's yeast)
Supplies needed for at home injections of B12 Before administering your injection, you will need to assemble the following: Clean sterilized surface for your materials Antimicrobial soap and clean water Alcohol wipes Sterile gauze or bandage New syringe and needle Liquid B12 How to inject B12 at homestep-by-step Here is how to inject b12 safely at home: Wash and disinfect your work surface
SB: Conceptualization, Formal Analysis, Supervision, Validation, Writing review and editing
Deficiency impairs both pathways, with measurable consequences for oxygen delivery capacity
