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Oral Supplements Timeline People who take Vitamin B12 supplements in tablet or capsule form usually experience improvements after a period of 2 to 4 weeks
Injections are particularly good in these cases, as they bypass the tract for higher absorption rates than with food or oral supplements
A lack of vitamin B12 can result in symptoms like pale or jaundiced skin and weak, brittle nails
My dad was diabetic and injected subcutaneously, alternating between tummy and thighs
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