can b12 injections make you tired does injection sleepy Feeling All the Time? It Might Be a Vitamin B12 Deficiency Feeling tired, foggy, or run-down?

Janet Beres, PA-C Table of Contents: What are the symptoms of B12 deficiency

If that sounds familiar, youre not alone

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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

To maintain optimal stability, keep the pen away from light, and do not expose it to repeated temperature changes

Cyanocobalamin Injectable is prescription Vitamin B12 used in the treatment of Vitamin B12 deficiencies as well as certain types of anemia