does b12 injection cause insomnia Are Vitamin Shots Right for You? Vitamin B12 Side Effects: Risks

Some people, particularly those who were severely deficient, report a sudden improvement in energy, focus, or mood within 24 to 72 hours

Some observational research has also suggested a slight increase in lung cancer risk linked to long-term, high-dose B6 and B12 supplementation, particularly among men and smokers, although this kind of study cannot prove that the supplements caused the cancers

More specifically, the radio frequencies interact with existing collagen fibers, causing them to begin producing higher levels of this amino-acid based protein

Vogel G, Couzin-Frankel J

Unlike oral supplements, injections bypass the digestive system, ensuring optimal absorption for those with deficiencies or difficulty absorbing B12 from food