The 2.5 mg, 7.5 mg, and 12.5 mg doses are transitional steps, not long-term targets
Guidance from primary care sources and specialty reviews points out a few important facts: Vitamin B12 deficiency can cause anemia and neurological symptoms, but routine screening of average-risk adults is not generally recommended Instead, testing is focused on people with higher risk, such as older adults, strict vegans, people with certain stomach or intestinal conditions, or long term use of specific medicines like metformin or acid reducers In real life, that might look like this: Your provider may suggest B12 rich foods or a standard oral B12 supplement, even without immediate lab work, if: You are over about 50 and your diet is low in animal products You follow a strict vegan or vegetarian diet and want to keep your levels up You have a mild risk factor but no concerning symptoms Your provider is more likely to order B12 labs if: You have unexplained fatigue, numbness, balance problems or memory changes You have anemia on other tests You have multiple risk factors, surgeries or long term digestive conditions that make absorption less likely Even when lab tests are not ordered right away, dosing and follow up should still be decided together with a licensed clinician
Archived from the original on 24 August 2018
Monitoring should be specific Depending on the goal, monitoring may include: Body composition trends, not just scale weight Blood pressure and resting heart rate Fasting glucose, insulin, A1c Lipids and inflammatory markers Liver enzymes, kidney function Thyroid markers when relevant Nutrient status, especially if appetite drops Sleep data, subjective and objective if available You also need a plan for what happens if you stop
EH: Data curation, Formal Analysis, Writing review & editing
