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Healthline.omeprazole
B12 injection side effects are real, and while some people feel better instantly, others may deal with reactions they didnt expect
The reasoning is that oral bioavailability is ~4050%, and animal study HED conversions suggest higher doses may be needed for the full effect
"Effect of bile on vitamin B12 absorption"
Treatments may last until your vitamin B12 levels have improved or you may need treatment for the rest of your life
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