Infections The primary concern is infection, including both bacterial and opportunistic or atypical infections
Start feeling the shift within weeks
The medication should be injected subcutaneously into fatty tissue of the abdomen, thigh, or upper arm, with the abdomen often being preferred due to consistent absorption and ease of access
Conditions that affect the gut, like Crohns disease or celiac disease, can damage the intestinal lining, making it difficult for B12 to pass into your bloodstream
Those gut cells are linked by tight junctions. When the links loosen, more particles slip through and stir immune cells
The FDA also publishes safety-focused information about bulk substances used in compounding, including a list of substances that raise significant safety risks (Category 2)