Instead, these injections just help fat dissolve by improving the rate of metabolism
This vitamin is involved in forming DNA and red blood cells, as well as necessary for brain function, heart health, energy production, and more ( Its found naturally in many animal products and sometimes added to fortified foods ( Vegans, vegetarians, older adults, and people with digestive issues that can interfere with nutrient absorption may be at a higher risk of vitamin B12 deficiency and need to supplement ( summary Vitamin B12 is a water-soluble vitamin involved in several aspects of health, including DNA synthesis, red blood cell formation, and brain function

This article examines the side effect profile of B12 therapy in older adults, covering common reactions such as injection site discomfort and gastrointestinal symptoms, rare serious adverse events requiring urgent medical attention, important drug interactions with medications like proton pump inhibitors and metformin, and evidence-based dosing guidance aligned with NICE and BNF recommendations for safe, effective B12 replacement in this vulnerable population
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