Nat Rev Gastroenterol Hepatol
Led by Aloni Le, DNP, ARNP, FNP-C , a Board-Certified Nurse Practitioner with more than 13 years of advanced medical experience, our treatments are carefully designed to deliver what your body needs safely and effectively
If you are feeling low in energy, then you should have your B12 levels tested
Feeling tired, weak, or foggy isnt normal
Neurological symptoms such as numbness, tingling in the hands or feet, muscle weakness, balance problems, or difficulty walking can occur

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