vitamin b12 complex injection benefits Injections: What You Need To Know Vitamin B-12 Intramuscular Injection —

[4] However, consistently taking large amounts of vitamins from multiple sources could potentially increase the risk of side effects (for example, very high vitamin B intake from multiple supplements over time can cause neuropathy, and high niacin from many sources could affect your liver)

However, if any particulate matter remains undissolved or the solution remains cloudy, the vial should be discarded for safety

If you are getting both injections, they can even be given on the same day (different syringes, possibly different sites)

Vitamin B-Complex 100 Injection [Prescribing information]

indeed, people with very low blood pressure or those prone to orthostatic hypotension should not use niacinamide injections without careful monitoring

(Contains description of formulation, indications, dosing, and storage recommendations)