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nicotine (nik´o-tēn) (nik´o-tin)   a very poisonous alkaloid that in its pure state is a colorless, pungent, oily liquid with an acrid, burning taste. It is a constituent of tobacco and can also be produced synthetically. Preparations are administered orally, intranasally, or by inhalation to help people stop smoking. In water solution, nicotine is sometimes used as an insecticide and plant spray.
 

nicotine polacrilex  nicotine bound to a cation exchange resin, an ingredient of nicotine chewing gum for persons who want to stop smoking.





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