when and how to take l carnitine L-Carnitine Benefits, Sources, Side Effects The Difference Between L-Carnitine &

do not leave vial open Inspect before use Discard if solution is cloudy, discolored, or contains particulates Label and date Mark vial with date of first use Safety Considerations Benzyl Alcohol Sensitivity Contraindications for use in neonatal research: Bacterostatic Water containing benzyl alcohol should never be used in research involving neonates or premature infants

That's a critical distinction

No recycled or generic COAs

1992, New York, Plenum Kondo T, Dale GL, Beutler E: Glutathione transport by inside-out vesicles from human erythrocytes

So if you are taking one from a commercial pharmacy, look and see if it is cyanocobalamin