In addition to physical exertion, fatigue can be brought on by conditions like arthritis, anemia, fibromyalgia, chronic fatigue syndrome, colds, flu, eating disorders, sleeping problems, autoimmune disorders, and diabetes
A plain B12 shot contains vitamin B12 only
People with B12 levels below 200 pg/mL are called B12 deficient and are likely to have symptoms - this could be due to medicines, strict vegetarian diets, or medical conditions
However, the slower tirzepatide titration may improve tolerability by allowing more gradual adaptation
Because autoimmune gastritis is a chronic, lifelong condition, your body will never regain the ability to absorb B12 from food normally [1] [5]