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. 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
Who Should Be Checked for Vitamin B12 Deficiency An older person should probably be checked for Vitamin B12 deficiency if he or she is experiencing any of the health problems that can be caused by low levels of this vitamin
This is because the life cycle of red blood cells is 90 days
Summary : B12 is available in a variety of forms including oral supplements, sublingual tablets, injectable shots and gel formulas
