They can order a blood test to determine whether you should take a supplement
Thus, in my clinical practice, given the uncertainty about B12 blood levels, if a patient has symptoms suggestive of B12 levels affecting cellular function, unless he/she wishes to undertake further testing with homocysteine and MMA, a trial of sublingual B12 in the active form at 1-2000 mcg daily (to avoid malabsorption issues) is a reasonable course of action
However, once it is diagnosed, regular injections of vitamin B 12 will prevent symptoms from returning
The nasal absorption of hydroxocobalamin is so high that weekly application could prove a good alternative for monthly injections
Category 2 is where compounds go when the FDA has determined they cannot be used in compounding typically because the agency has identified safety signals, insufficient data, or both
Say goodbye to clinic or hospital visits