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For the record

February 23, 2009

Zyban: A Feb. 16 article on quitting smoking said that the smoking-cessation medication Zyban might act by blocking the brain chemicals norepinephrine and dopamine. In fact, Zyban is believed to act by blocking the reuptake of norepinephrine and dopamine into nerve cells. This would enhance, not block, activity of the two chemicals.

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