health benefits of vitamin b12 injections Guide: Forms, Dosage, and When to Worry About Too Much Do your B12 shots contain

Research-chemical status: compounds like 5-Amino-1MQ are typically sold for laboratory use only, not for human consumption

They are used to treat symptoms caused by low B12like fatigue, weakness, nerve tingling, or anemia

In a 2018 review, researchers found evidence that taking 1,000 mcg of B12 and getting B12 injections had similar effects on treating B12 deficiencies

Individuals with low B-12 often feel fatigued or sluggish, and B-12 injections can help to alleviate these symptoms by supporting the bodys energy production

It may, however, increase the likelihood of side effects

(PubMed) Lahner E, Persechino S, Annibale B