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Darkened skin patches A B12 shortage can affect melanin activity, causing darker areas near the mouth or eyes
Once injections or medical treatments bring B12 levels back to normal, oral supplements help keep those levels steady
Your doctor can do a blood test if youre concerned
Theyre widely available over the counter or through prescriptions and are usually cost-effective
While oral supplements are an option, they still have to go through the digestive system, where absorption issues can get in the way
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