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Vitamin B12 also helps your body absorb other macronutrients and micronutrients, such as iron and folic acid further contributing to a reduction in tiredness and fatigue

I like to inject it pretty slow as I find it stings a bit

E., Yasuda, R

Its not a quick fix
Association of maternal vitamin B 12 and folate levels in early pregnancy with gestational diabetes: a prospective UK cohort study (PRiDE study)
