Running a B12 deficitwhich about six percent of Americans under the age of 60and 20 percent of those over 60 do (1)puts you at risk for muscle weakness, fatigue, depression, memory issues, erectile dysfunction, and a cluster of symptoms that can be so severe that theyre debilitating
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Monitoring-guided supplementation is the usual approach, typically beginning with oral supplementation if blood tests indicate suboptimal levels, and escalating to IM injection if oral treatment is insufficient or poorly tolerated
Taking vitamin B5 together with antibiotic tetracycline will interfere with the absorption and effectiveness of these antibiotics
In some countries hydroxocobalamin has completely replaced cyanocobalamin as first choice for vitamin B 12 therapy because it is retained in the body longer and can be administered at intervals of up to three months
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