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see Table 1) ( While European guidelines recommend up to 4 g/day for adults, most of the included studies administered pharmacological doses ranging from hundreds to thousands of micrograms
B12 injections typically deliver about 1,000 mcg per dose, while oral supplements can range from 50 to 5,000 mcg
Always do your own research and consult a professional if needed
Vitamin B12 injections are significantly more expensive than oral supplements when accounting for the full cost of treatment including office visits, injection fees, and ongoing maintenance appointments
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