This is especially important for individuals with absorption issues, such as those with gut inflammation or certain dietary restrictions
However, if you are a vegetarian and vegan, you may be interested in trying out other sources of vitamin B12, such as nori, shitake mushroom, and fortified foods
This adds an additional layer of cost and complexity but also provides a safety net that self-administered peptides lack
If a patients situation is truly exceptional and a doctor can justify a deviation from the guidelines, it may be possible
Your doctor should also take a thorough medical history, asking you about symptoms and whether you have had diseases like celiac disease or Crohn's disease
Unlike oral supplements, which take time to enter the bloodstream through digestion (and may not be fully utilized), injections deliver the vitamin straight into your bloodstream, skipping the digestive process so your body can use it right away