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Chronic illness, like diabetes, can also interfere, partly because diabetes is associated with higher rates of obesity and PCOS, which are both factors causing irregular periods
In short, an injection will provide a higher dose of B12 at regular intervals, whilst oral supplements have a lower dosage and can be taken every day
Supplementation of vitamin 12 in amounts up to 1000 mcg can be consumed safely
Related Articles READERS' COMMENTS [7] Please note, only GPs are permitted to add comments to articles People with the neurological symptoms, OR being in risk populations for malabsorption, (elderly, known malabsorption, GIT surgery, alcohol excess), we would check FBC, plus LFT, and other items as perhaps indicated