how often to inject b12 Shots at Home: How, Where & Yourself Vitamin B12 Injections: Ideal Dosage
Description
There could be a variety of reasons

Fatty Acid Synthesis : It helps make fatty acids, important for energy and healthy cells

Women taking long-term medications such as metformin (for diabetes or polycystic ovary syndrome) or proton pump inhibitors (for acid reflux) may also have reduced B12 absorption

When combined, they have been suggested by researchers to exert significant action
