However, this test alone has a wide range of what is considered normal and may fail to pick up all vitamin B12 deficiencies
Conversely, medications like metformin, H2 blockers, and proton pump inhibitors can reduce the absorption of Vitamin B12
Which mostly means youre spending money for red urine
For those who dont notice a big improvement, but do notice a huge problem at month 3, the rare few who have been able to seek help elsewhere from a compassionate doctor and have regular injections have gone on to find incredible benefit
Other indications include malabsorption disorders (such as Crohn's disease or coeliac disease), following gastric surgery, strict vegan diets without supplementation, and certain medications that interfere with B12 absorption