Sean has carpal tunnel syndrome. A few months ago, he began taking megadoses of vitamin B-6 when he read that the vitamin can cure the disorder. Today, Sean reported to his friends that his hands were feeling numb and his walking is unsteady. Based on this information, Sean should
A. discontinue taking vitamin B-6 because his body doesn't require the micronutrient.
B. stop taking vitamin B-6 because he's showing signs and having symptoms of vitamin B-6 toxicity.
C. increase his vitamin B-6 intake because the numbness and unsteadiness are signs that the treatment is working.
D. continue taking the megadoses of vitamin B-6 because his body needs more time to heal.
Answer: B
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