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B12 injections starts to work nearly right away

Higher levels and iron overload may increase your risk of blood clotting, deep vein thrombosis, and stroke

Decreased sperm count and infertility caused by reduced testicular function

Journal of Clinical Peptide Research, 15 (3), 45-58

Protects against Tetanus, caused by Clostridium tetani bacteria

20% of the over 60s are deficient in B12, and 11% of those who follow a vegan diet are also deficient The most common cause of Vitamin B12 deficiency is pernicious anaemia, however, it is estimated that 20% of the over 60s are deficient in B12, and 11% of those who follow a vegan diet are also deficient