The primary clinical evidence comes from a Phase II trial for postoperative ileus using 0.01-0.1 mg/kg IV with excellent tolerability (Barlind et al., 2008)
Stomach acid plays a critical role in separating vitamin b12 from dietary proteins, the first step in b12 absorption
12,13,37 However, current single-cell technologie still struggle to fully capture the native tissue architecture, while the sensitivity and specificity of liquid biopsies require further optimization
Looking at B12 levels in the blood of hair loss patients When we zoom out beyond the actual hair follicle and look at studies on people with common hair loss disorders like AGA, telogen effluvium (TE), or alopecia areata (AA) the data are consistently clear: there is no difference in blood measurements of vitamin B12 between people with and without hair loss (9)
While they can be effective, its important to understand how they work, their side effects, and how to protect your health while taking them