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Big Tobacco back in TV viewers' faces as FDA cuts in Big Tobacco%2C after a 40-plus year absence%2C is back on TV with ads Its latest product%2C the electronic cigarette%2C faces U.S

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Key Takeaways Nicotine leaves the body quickly, but its metabolite lasts much longer: Nicotine itself is usually eliminated within 13 days, but cotinine (the primary metabolite tested for) can remain detectable for up to 10 days in blood and up to 3 weeks or longer in urine for heavy users

(accessed July 25, 2026)

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