Sales of Pfizer's quit-smoking pill Chantix are plummeting in the U.S. after regulators tied the drug to suicides, a setback that may further depress shares that reached a 10-year low a month ago.
U.S. prescriptions for Chantix have dropped by almost 33 percent since Jan. 18, when the suicide link surfaced, according to research firm Verispan LLC in Yardley, Pennsylvania. Wary doctors now use the pill only when other treatments fail, said Norman Edleman, chief medical officer for the American Lung Association in New York.
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