youtube how to give a b12 injection in thigh Self-Inject How to Give a B12

Breast Cancer Res (2019) 21(1):64

However, its best used with medical oversight

In many cases, a patient will experience recurrent or ongoing periods of chronic back pain that can prevent them from working or participating in an active, healthy lifestyle

For example, athletes with high metabolic demands, vegans who consume no dietary B12, or individuals with chronic malabsorption issues like Crohns disease may find they feel their best with a bi-weekly (every two weeks) injection

Symptoms may include diarrhea, vomiting, weight loss, lack of appetite, and abdominal pain

Those on vitamin B12 deficient diets such as vegans and sometimes vegetarians tend to reabsorb more B12 than from their food intake