By the end of this guide, you will have a clear understanding of the math and the methodology required to manage your personalized program effectively
Numerous studies demonstrate that pharmacological agents can influence gut microbiota, which is increasingly recognized as a factor in ME/CFS pathology [173,174,175,176]
Method Absorption Rate Advantages Disadvantages Oral pills 1.2-40% depending on intrinsic factor Convenient, widely available Poor absorption, especially with age or GI issues Sublingual Slightly better than pills No need for intrinsic factor, easy to use Still less effective than injectable forms In-clinic IM injection Nearly 100% Highly effective, professionally administered Requires clinic visits, potential travel and waiting time At home B12 injection Nearly 100% Highly effective, convenient, no travel needed Requires training, prescription, and comfort with self-injection IV infusion 100% Immediate delivery to bloodstream Most expensive, requires professional administration For many people especially those with serious deficiencies, digestive disorders, or pernicious anemia at home B12 injection offers the sweet spot of effectiveness and convenience
Compared to oral or injectable forms, cream formulations have less interference with other organs and systems in the body and are safer
