do b12 injections work immediately How Quickly Do You Feel

Data was self-reported by 37,050 surveyed customers who checked in with their provider on their second and third check-in between 1/1/23-5/12/26

Vitamin B12 injections may not be suitable for people who have a history of: allergic reaction or sensitivity to cobalt or vitamin B12 Leber disease kidney disease or impaired kidney function Also, vitamin B12 injections may not be necessary for people without a deficiency

Consulting with a healthcare provider to identify any allergies is critical before starting B12 therapy

Older adults are at a higher risk

Ensuring you take B12 only after a full meal to aid absorption