A GRAS determination reflects a safety conclusion for a described food-ingredient use and is not equivalent to drug approval or a finding of therapeutic efficacy
Basic laboratory evaluation is appropriate for patients with persistent or severe fatigue and should include complete blood count, comprehensive metabolic panel, thyroid-stimulating hormone, ferritin/iron studies, and vitamin B12 and vitamin D levels
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Vitamin B12 plays a vital role in converting food into energy that powers your body functions
Similarly, if you use proton pump inhibitors or H2 receptor antagonists for acid reflux or peptic ulcers, your stomach acid levels may decrease, making it harder for your body to absorb B12 from your diet
This is why choosing from the best B12 injection sites is so important