when are b12 injections given Do You Need a Prescription for Injections? B12 Shots in Friso, Sherman,

[91] Since only bacteria and some archea possess the genes and enzymes necessary to synthesize vitamin B 12 , plant and algae sources all obtain the vitamin secondarily from symbiosis with various species of bacteria, [5] or in the case of fermented plant foods, from bacterial fermentation

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These two things combined less vitamin B12 transferred to the baby during gestation and via breast milk put the baby at risk for a vitamin B12 deficiency

Common side effects are GI: nausea (28% to 33% at higher doses), diarrhea (22%), constipation (17%), vomiting (13%), mostly during dose titration