Each method has its benefits and is chosen based on the patients needs and the doctors assessment
Among the 25 studies included in the qualitative synthesis (16 in the meta-analysis), 15 focused specifically on serum cobalamin changes (reported by baseline and post-treatment means and standard deviations in pg/mL) and 10 reported homocysteine outcomes (means and standard deviations in mmol/L)
Some individuals are more likely to develop low vitamin B12 levels due to diet, age, medication, or absorption issues
The dose depends on whats in it
[18] Additionally, very high doses of folic acid could potentially mask a B deficiency, so its important your doctor knows about any folate supplements you take
You can also take a vitamin B12 supplement, but make sure you stick to the good stuff