can b12 injection make you sick Vitamin Injections: Good or Bad? Vitamin B12 Side Effects

The B12 injection is generally very safe

A common dosing approach begins at 2.5 mg once weekly, with stepwise increases every 4 weeks as directed by your healthcare provider, up to a maximum dose of 15 mg once weekly

Vitamin B12 injections are delivered directly into the bloodstream, bypassing the digestive system

Heres what you might notice after your flu shot: Mild side effects are a normal part of the vaccine process, says Brian Curtis, MD, vice president, chief medical officer for OSF Medical Group

However, if you have been advised to take higher doses of B12, you may need to take a separate B12 supplementfor example, if you need to address a deficiency