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Administered incorrectlypost-meal, without exercise, at inconsistent intervalsthey underperform despite sound pharmacology
[95] Intramuscular or intravenous injection [edit] Injection of hydroxycobalamin is often used if digestive absorption is impaired, [2] but this course of action may not be necessary with high-dose oral supplements (such as 0.51.0 mg or more), [97] [98] because with large quantities of the vitamin taken orally, even the 1% to 5% of free crystalline B 12 that is absorbed along the entire intestine by passive diffusion may be sufficient to provide a necessary amount
You also need vitamin D for other important body functions
Advertisement If you have pernicious anemia, youll need to take vitamin B12 supplements regularly for the rest of your life
