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Most individuals can benefit safely, but pregnant or breastfeeding women, people with known vitamin or nutrient sensitivities, or those with specific medical conditions should consult with a healthcare provider before receiving injections

Duration depends on your metabolism, hormonal status, sun exposure, sleep quality, lifestyle factors, and whether you commit to a maintenance plan

2,97 Studies and clinical practice of treatment of pernicious anaemia with regular high-dose injections has confirmed the safety of B12 at high dosages, and therefore neither the Institute of Medicine (IOM) in the USA nor the European Food Safety Agency (EFSA) have set an upper limit

If neurological symptoms are present (such as paraesthesia, ataxia, cognitive changes, or visual disturbances), more intensive treatment is required