The following are being older, because a person becomes less able to absorb B12 as they age eating a vegetarian or vegan diet taking anti-acid medication for an extended period weight loss surgery or other stomach surgery, which can affect how the digestive system absorbs vitamin B12 Most people can get enough vitamin B12 from dietary sources
[11] [12] Patient safety advice: Individuals should be cautious of claims that any single supplement, injection, or product can produce significant fat loss without lifestyle modification
Jane Smith, a nutrition expert, says, Vitamin B12 deficiency can show up in many ways
A study found, Parenteral vitamin B12 is more effective than oral supplementation in patients with severe deficiency or malabsorption. In summary, B12 injections are essential for treating many health conditions and absorption problems
More serious vitamin B12 side effects may include the following: Allergic reactions, such as hives, trouble breathing, or swelling of the face, lips, tongue or throat