Health Conditions Affecting B12 Absorption Several health conditions can impede the absorption of vitamin B12, including pernicious anemia, conditions affecting the stomach, small intestine conditions like Crohns disease and celiac disease, bacterial growth, parasites, and certain medications
Most multivitamin supplements contain between 2.5 and 25 g of B12, which is well above the RNI but considered safe due to the vitamin's low toxicity profile
B12 injections are concentrated doses of vitamin B12, a key nutrient that plays a critical role in how your body creates energy, metabolizes fat, and supports brain and nerve function
doi: 10.1016/j.cyto.2020.155117 128 NankiTUrasakiYImaiTNishimuraMMuramotoKKubotaTet al
Screening matters as much as dosing
This strategy helps prevent your body from becoming too accustomed to the therapy, ensuring it remains effective over the long term