three randomized clinical trials Each of these studies shows that in terms of increasing serum vitamin B oral vitamin B 12 is just as effective as IM B 12 12 levels
The intranasal formulations are not approved to treat acute B12 deficiency
What the Authoritative Sources Say About B12 Deficiency and Supplementation The National Institutes of Health Office of Dietary Supplements publishes the most thorough citation-backed overview of vitamin B12 its role in red blood cell formation and neurological function, the populations most at risk for deficiency (older adults, people on long-term metformin or proton pump inhibitors, vegetarians and vegans, people who have had gastric bypass surgery), and the recommended daily intake at each life stage
Therefore, they shouldnt be taken together without medical advice
The dose for IV vitamin B12 therapy can range from 1,000 to 5,000 mcg
As you explore its myriad potentials, always prioritize your health, do your due diligence, and seek expert counsel to ensure optimal outcomes