side effects of a vitamin b12 injection and Safety are there any side effects

Because this is rare but potentially life-threatening, injections are best given in settings with trained staff and emergency treatment available

Re-ingestion allows for absorption of nutrients made available by bacterial fermentation, and also of vitamins and other nutrients synthesized by the gut bacteria, including vitamin B 12

Photographic tour in the Salar de Tara

If so how long did it take

Consequently, ANOSIM testing was also performed, which showed that clustering by treatment group was significant in each of the diversity measures (unweighted UniFrac: R value = 0.369, p = 0.0010

People with documented malabsorption disorders including Crohns disease, celiac disease, or those whove had portions of stomach or small intestine removed need direct delivery