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vitamin b12 injections uk side effects Shots: B12 Benefits, Uses, Risks Why Do I Feel Worse
Description
Cyanocobalamin | Drugs | BNF

Patients need to learn how to do this safely, if they need to do it themselves

When the body lacks sufficient B12, it can disrupt normal hair growth cycles and cause rampant shedding

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And over time this can be problematic, leading to a wide range of symptoms, such as tiredness, depression, insomnia and brain fog to name just a few
J Neural Transm Vienna Austria (1996)