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The B12-intrinsic factor complex travels to the terminal ileum where specific receptors mediate absorption

According to the Mayo Clinic, parenteral vitamin B12 therapy is clinically indicated for treating deficiency caused by pernicious anemia, gastrointestinal disorders such as tropical sprue, and conditions resulting in malabsorption like pancreatic insufficiency

This video provides good instructions to support you as a backup

While B12 is important for blood cells, nerves, and DNA, excessive intake can lead to problems

Three things

Lean protein and vegetables do the real work on the plate, while cardio and strength training drive results in the gym