[22] [18] Pseudovitamin B 12 is the majority corrinoid in spirulina, an algal dietary supplement sometimes erroneously claimed as having this vitamin activity
There is an association with gastric antral vascular ectasia (which can be referred to as watermelon stomach), and pernicious anemia
Any weight change reflects actual tissue loss, which is slower but more meaningful
This means the Vitamin B12 goes straight into your bloodstream
[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
For intramuscular injections , which are common for administering Vitamin B12, needle lengths usually range from 5/8 inch to 1.5 inches