vit b12 injection brands Vitamin – Manufacturer Cyanocobalamin (B12) / Products /

Early signs of declining B12 levels include profound fatigue, tingling or numbness in extremities, cognitive changes, and balance problems requiring medical review

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Older adults are also at a higher risk of B12 deficiency due to decreased stomach acid levels, which are needed to separate B12 from protein in the diet for absorption

If you have a temporary deficiency or increased requirement (say, after a surgery or during recovery from an acute illness), you might only need a short course, perhaps a few weeks of injections, until your vitamin levels normalize or you can meet your needs by mouth again