vit b12 injection route Treating Severe Vitamin Deficiency Best Vitamin B12 Injection Site:

The Cochrane Collaboration, 2011

They may ask you to adjust your medications and supplements to prevent the therapy from interfering with them negatively

In contrast, there is some evidence of an enhancement of the maximum absorption via intrinsic factor, by up to a factor of 2, when the vitamin B12 is accompanied by food, but this is not consistently observed and probably only applies when the food quantity and vitamin B12 dose are sufficient to slow the passage of the vitamin B12 through the small intestine enough (about three hours or more) to allow each intrinsic factor receptor to absorb two molecules of vitamin B12 from the oral dose rather than one

But does this pairing deliver on the promise of rapid results, and is it safe for everyone