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Cobalamin (vitamin B 12 ) Deficiency Investigation & Management Early treatment of cobalamin deficiency is particularly important because neurologic symptoms may be irreversible

. Doctors may not be prescribing oral vitamin B12 formulations because they may be unaware of this option or have concerns regarding its effectiveness Objectives: To assess the effects of oral vitamin B 12 versus intramuscular vitamin B 12 for vitamin B 12 deficiency. Selection criteria: Randomized controlled trials (RCTs) comparing the effect of oral versus IM vitamin B 12 for vitamin B 12 deficiency

Are there any side effects I should be aware of

Its not only about effectivenesscomfort matters too