The production of intrinsic factor happens in the stomach, which if impaired, can have a hard time properly synthesizing this protein
There is an alternate approach to the injection, wherein you go for a 1000 mcg dose
Side effects and how to manage them: the most common complaints are constipation, dark stools, nausea, and a metallic taste
Common things that can negatively impact vitamin B12 absorption and transportation: Strict vegan diet Low stomach acid diet Pancreatic insufficiency Intrinsic factor antibodies Slow TCNs - Fortified foods with synthetic folic acid SIBO Celiac Disease Crohns Vitamin B12 Supplements Vitamin B12 dietary supplements are very common
WADA bans substances that lack regulatory approval for human use even if they are not specifically performance-enhancing
Choline is required for the transport and metabolism of fats and cholesterol in the body