The duration of the effects of B12 injections varies depending on individual factors such as metabolism and the frequency of injections
You should contact your GP or NHS 111 if you experience: Persistent diarrhoea lasting more than 7 days in otherwise healthy adults Blood or mucus in stools , which may indicate inflammatory bowel disease or infection Severe abdominal pain or cramping that is worsening or different from previous digestive symptoms Unexplained weight loss alongside bowel changes Signs of allergic reaction , including rash, itching, swelling, or difficulty breathing (call 999 or go to A&E for severe reactions) Neurological symptoms such as numbness, tingling, balance problems, or memory difficulties, which may indicate B12 deficiency is not being adequately treated Seek help sooner if you have red flag symptoms, are pregnant, immunosuppressed, elderly, or have significant underlying health conditions
Maintaining balance is essential for achieving the best outcomes
Studies of chondrocyte cultures suggest that it promotes proteoglycan and type II collagen synthesis, which has driven exploration of potential utility in joint and cartilage repair models
