Without intrinsic factor, vitamin B12 passes through the digestive system without being absorbed, no matter how nutrient-dense your diet or supplements may be
Here is one example research week for the 10 mg vial at 150 mcg (45 units), dosed in the morning
They use a high-pressure, narrow jet of medication, which is forced through a microscopic orifice
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Symptoms include: Tingling or numbness in the extremities Difficulty walking, loss of balance, and falling Brain fog Swollen tongue Tiredness Weakness A lack of vitamin B12 can also lead to anemia, according to Johns Hopkins Medicine, because a lack of the nutrient impairs your bodys ability to make red blood cells
For example, eating lots of leafy green vegetables or products with green food coloring can cause your stools to be green