Methylcobalamin is the active and naturally occurring form of Vitamin B12, which is critical for the healthy function of the brain, nerves, and for the formation of red blood cells
anaphylaxis, though rare, necessitates immediate discontinuation and emergency management
Pyridoxine is an especially important vitamin for maintaining healthy nerve and muscle cells and it aids in the production of DNA and RNA, the body's genetic material
Basically a study looked at 100 drugs & found that 90% of them were fully potent 15 years after their expiration date, though that may vary by drug, and perhaps liquid forms are a bit more vulnerable (perhaps)
The Journal of Pediatrics
If you find yourself experiencing these symptoms often you may need to talk to your healthcare provider about the potential of having a vitamin B12 deficiency