vitamin b12 injection side effects anxiety palpitations Feeling Tired All the Time? It Might Be a Deficiency Pernicious Anemia: Definition, Symptoms, Causes

But the question is how often can you get a B12 shot

Common Adverse Reactions to B12 Injections Most people do fine with Vitamin B12 shots

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

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