how long to feel effects of b12 injection Quickly Does Shot Work? Does It Help Lose Weight? Vitamin B12 Injections for Energy,

Assess response at two-week intervals during your first cycle

Cyanocobalamin (Vitamin B12)..............5000 mcg Benzyl Alcohol (preservative).................1.0% v/v Sodium Chloride.................................0.22% w/v Ammonium Sulfate...............................0.1% w/v Citric Acid..........................................0.01% w/v Sodium Citrate..................................0.008% w/v Inject subcutaneously or intramuscularly

Now, at the time I was on Carbamazepine which is known to mess with your white blood cell count, but I don't think its known to mess with red blood cells

They are to support your foundations towards your health goals when you want them