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Cognitive Problems Vitamin B12 is essential for brain health, and its deficiency can lead to cognitive problems such as memory loss, confusion, and difficulty concentrating

Comparative Bioavailability and Utilization of Particular Forms of B12 Supplements with Potential to Mitigate B12-Related Genetic Polymorphisms

Biol Chem

I've never vomited I've felt nauseous with my symptoms but nor from injection The effects I've had are: Suddenly dripping off to sleek which I hate Headaches Tinnitus Blurry vision Sometimes an old symptom returns Not always and not all at one time and more atthe start I've never had any side effects & I've been self injecting every other day for 20 months now, as the 3 monthly one from my GP isn't enough for me

Jun 25 2015;5:11601

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