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Oral supplements are inexpensive up front, but because so little of a swallowed dose is absorbed, some of what you buy is not used by your body
Serum peak is faster than IM, and B12 can be combined with hydration (saline), B-complex, vitamin C, magnesium, and other ingredients in the same bag
After injecting, apply gentle pressure with a clean cotton swab
Its a nuanced question, and understanding the ins and outs of how our bodies absorb this vital vitamin is key to finding the right answer for you
A blood test establishes your current B12 level
Previous blood results, diagnoses, B12 treatment and response
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