b12 injection reactions How Fast Does Work What to expect after the first B12 shot? PDF) Adverse reactions to vitamin
Description
Alcohol abuse, aging, smoking, diabetes, thyroid disorders, medications such as antacids and Type 2 Diabetes medications as well as gastric bypass surgery can all affect your absorption levels

However, it is essential to keep your healthcare team informed about your complete medical history, including any allergies, ongoing medications, or existing health conditions

Samples were tested in triplicates in three separate experiments
Br Med J 1993;306:1645-8
