An important note on folate: if B12 deficiency is suspected, folate deficiency should not be corrected in isolation before B12 status has been assessed and treated, as doing so can precipitate or worsen neurological complications
Furthermore, to get the most out of a supplement, you might need to take it daily
No, only women at risk of deficiency require B12 supplements during pregnancy
Presented for research literature review only Ramani N et al
Human relevance would require sufficient published, peer-reviewed controlled human studies, appropriate regulatory review, pharmacokinetic characterization, toxicology data, and long-term safety evaluation
Treatment for vitamin B12 deficiency may involve dietary changes, oral supplements, or B12 injections