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Therefore, vitamin B12 should only be injected by a health care professional who is prepared to provide first aid immediately

In this type of anemia, people lack intrinsic factor in the stomach which is necessary for the absorption of the vitamin

Coughing: While less common than sneezing, it can occur, especially if the infection extends to the lower respiratory tract

B12 circulates in the blood bound to transport proteins (particularly transcobalamin) and binding proteins (such as haptocorrin)

In addition, IV drips and injections do not contain any artificial or toxic ingredients, parabens, or other preservatives, unlike store-bought oral supplements

While the initial effects can be noticed within 48 to 72 hours, it might take several weeks to experience the full benefits