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If you take B12 tablets or sublingual supplements, you might feel small changes in a week or two
Customer service is quick to respond with questions or concerns
This is not specific to B12 but reflects the sensitivity of the gastrointestinal tract in these conditions
Regular injections or supplements might be necessary to maintain adequate levels
Evening use may be more likely to disrupt sleep, but this has not been tested in a controlled human study
Seek medical attention if your symptoms get worse or are severe
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