The 0.9% benzyl alcohol acts as a bacteriostatic preservative, which is what lets a single sealed vial be accessed repeatedly across a research workflow while supporting consistent solvent conditions
(4) Macro-B12 becomes a reasonable consideration when a value is very high, persists over time, comes with no B12 exposure, sits alongside an unrevealing workup, or disagrees with functional markers
However, even lacto-ovo-vegetarians run the risk of becoming deficient in B12
Key sources include: Animal Sources: Red Meat: Particularly high in L-Carnitine, especially beef and lamb
However, many people still develop deficiencies due to diet, absorption issues, or lifestyle factors
It also helps keep your hair, nails, and skin healthy