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Vitamin B12 injections are often recommended for individuals who: Follow a vegetarian or vegan diet Have a diagnosed absorption issue such as pernicious anaemia Have had gastric surgery or digestive disorders like Crohns or coeliac disease Take medications that interfere with B12 absorption, such as metformin or proton pump inhibitors Are over the age of 50 and produce less stomach acid Regularly experience fatigue, brain fog or low mood without explanation Even if you havent been formally diagnosed with a deficiency, many people find B12 injections help restore their energy and mental clarity when theyre feeling run down

Side effects may still occur and vary by patient 4

However if your B12 is already borderline that could be enough reason for you to avoid it

When to stop or modify protocols Discontinue or modify protocols if symptoms worsen progressively, if new neurological symptoms develop, if allergic reactions occur, or if significant side effects emerge

By improving metabolic function, vitamin B12 can support weight management efforts and promote a healthy metabolism

Signs and Symptoms of Vitamin B12 Deficiency Vitamin B12 deficiency is characterized by megaloblastic anemia, fatigue, weakness, constipation, loss of appetite, and weight loss