Injections are more effective for those with absorption issues or severe deficiency, but oral supplements work well for most people with mild deficiency and normal absorption
It is particularly common in individuals with certain risk factors, including those who have undergone gastric or small intestine resections, have inflammatory bowel disease, use metformin or proton pump inhibitors, follow a vegan diet, or are older than 75 years
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Food and Drug Administration) What is the actual goal metric
For residents of Cleveland, OH, Vitamin B12 shots offer a convenient and effective way to improve energy, combat deficiency symptoms, and support overall health
10.7860/JCDR/2022/53256.16055 48 Sanz-CuestaT.Escortell-MayorE.Cura-GonzalezI.Martin-FernandezJ.Riesgo-FuertesR.Garrido-ElustondoS.et al (2020)