Why do you not source your raw materials exclusively from the USA
In clinical trials at the 12 mg dose, researchers documented nausea in 28% of participants, diarrhea in 23%, constipation in 17%, and vomiting in 12%
How much youll pay depends on several factors, including whether your doctor orders it and for what reason, if you have health insurance, the type of plan you have, where you live, and even the lab where you get the test.
For more information on detecting and diagnosing deficiency, see our article: Vitamin B12 Deficiency Test Vitamin B12 Deficiency Symptoms in the Nervous System B12 deficiency is associated with the following neurological symptoms
One possible explanation is your body adjusting to B12 replenishment