However, due to its synthetic nature it is also the least bioavailable and active (Hunt, Harrington and Robinson, 2014) Methylcobalamin: The first of our non-synthetic forms of B12 is methylcobalamin, a naturally occurring co-enzyme
Ou J et al
Additionally, Pernicious anemia, an autoimmune condition affecting the stomachs ability to produce intrinsic factor (a protein necessary for B12 absorption), can also lead to deficiency
If you're traveling, a portable insulated case with ice packs or a travel cooler maintains the cold chain during transport
Check the powder color (should be blue to blue-purple), look for a third-party COA, verify HPLC testing, ensure the packaging is amber glass, and buy only from suppliers that disclose concentration and batch numbers
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