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Complete blood count - A CBC blood test checks levels of red blood cells, which B12 helps generate
If you feel drained no matter how much you sleep, and losing weight is harder than it should be, low vitamin B12 could be playing a role
Some of these medications use different active ingredients, ways of taking the drug, and dosing schedules
A study evaluating subjects with vitamin B12 deficiency found that reducing vitamin B12 levels had no adverse effects on hair shedding or hair growth
Individuals taking drugs that inhibit gastric acid secretion should consider taking vitamin B 12 in the form of a supplement because gastric acid is not required for its absorption
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