Less Common Side Effects Fatigue After Vitamin B12 Injection Although Vitamin B12 is typically used to combat fatigue, some individuals may experience increased tiredness post-injection
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In other words, you may notice that you have more energy than you used to
Key Takeaways For a lot of people, the first noticeable bump in energy shows up somewhere in the one-to-three-day stretch after the injection
Cyanocobalamin is indicated for vitamin B12 deficiencies due to malabsorption which may be associated with the following conditions: Addisonian (pernicious) anemia Gastrointestinal pathology, dysfunction, or surgery, including gluten enteropathy or sprue, small bowel bacteria overgrowth, total or partial gastrectomy Fish tapeworm infestation Malignancy of pancreas or bowel Folic acid deficiency It may be possible to treat the underlying disease by surgical correction of anatomic lesions leading to small bowel bacterial overgrowth, expulsion of fish tapeworm, discontinuation of drugs leading to vitamin malabsorption (see PRECAUTIONS-Drug Interactions), use of a gluten-free diet in nontropical sprue, or administration of antibiotics in tropical sprue
