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You can get B vitamins from proteins such as fish, poultry, meat, eggs, and dairy products
On a standard insulin syringe, this is approximately 0.007-0.012mL (roughly 1 unit)
This small amount of benzyl alcohol acts as a preservative that helps prevent bacterial growth within the vial after it has been opened
So, 1000 mcg of B12 is the same as 1 mg
Normal B12 Levels If your levels fall within the vitamin B12 test normal range, no further action may be necessary unless you are experiencing unexplained symptoms, in which case further testing may be warranted (e.g., checking methylmalonic acid or homocysteine levels)
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