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Always check total daily intake levels
B12 is found in animal products and some fortified foods so if you're vegan or vegetarian, talk to your doctor about supplements
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
If you have certain digestive disorders, including pernicious anemia, or have had gastric bypass surgery, oral B12 will simply not work because you can't absorb it correctly
What are the ICD-10 codes for a patient with low energy undergoing tests for vitamin B12, vitamin D, and Thyroid-Stimulating Hormone (TSH) levels?
If b12 provided acute anti-nausea effects, we would expect immediate relief after b12 injection
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