The most common side effects of B12 shots are minor and typically localized to the injection site
[1] [2] Blood levels of B12 may rise quickly following injection, though elevated blood levels do not immediately translate to symptom resolution
In addition, if you're one of the millions of Americans taking proton pump inhibitors (PPIs) that suppress stomach acid for conditions like acid reflux, you're going to be prone to vitamin B12 deficiency
People with digestive conditions, adults over 50, and those who feel run-down, foggy, or low on energy also often look into injections
The recombinant type XVII collagen (rhCOL17A1) is derived from the 1 chain of human COLXVII
It is particularly useful in cases where oral supplements are insufficient or rapid delivery of B12 is required