missed b12 injection symptoms 🟣 Vitamin Deficiency ➟ Vitamin B12 deficiency happens when the body does not have enough vitamin B12. ➟ Vitamin B12 is important for making healthy red blood cells and keeping nerves Vitamin B12 Deficiency in Women:

Low levels often cause fatigue and weakness

Anat Cell Biol

Frequency of Administration: Is it once daily

While we usually think about low B12 causing anemia, a few case reports describe new or worsened polycythemia - an elevated red cell mass - after B12 administration

[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