That difference is important: Water-soluble vitamins dissolve in water and generally are not stored in large amounts in the body
Trouble focusing, memory lapses, and a general mental haze are common neurological symptoms of low B12
Vitamin B12 Injection Side Effects Vitamin B12, an essential nutrient, plays a pivotal role in maintaining nerve function, red blood cell formation, and DNA synthesis
Each mL of sterile aqueous solution contains: Cyanocobalamin (B12)..........1000 mcg With sodium chloride 0.22% w/v, ammonium sulfate 0.1% w/v, citric acid 0.01% w/v, sodium citrate 0.008% w/v, and benzyl alcohol 1.0% v/v (preservative)
This represents the most common situation
Contamination Touching the needle to any surfaceincluding your fingers or the side of the vialcompromises sterility