does injectable b12 expire Hi I bought the liquid but there's no use by date on it or how long you have to use it once it's opened. Anyone know the answer? TIA x How Long Does Vitamin B12

Following the CDC guidance of a 28-day refrigerated-use window, that works out to three 80 mg vials at the low 1.6 mg dose, three vials at the standard 3.2 mg dose, or four vials at the elevated 4.8 mg dose

( 2 ) In other words, if your B12 levels are low, youll feel it physically and mentally

[1] For example, if a 2 mL dose (full 200 mg thiamine, 200 mg niacinamide) is to be given IV, a nurse might mix it into 50 mL of saline and infuse over 15-30 minutes

Many patients with B12 deficiency, especially those with pernicious anemia, have difficulty clearing cyanide

Where is the B12 injected

This way, the body gets the B12 it needs without any absorption problems