No: I assume you are asking whether nicotine lozenges can cause pulmonary fibrosis, and the answer to that is clearly no. Nicotine is not the major cause of pulmonary fibrosis in smokers - it is the aromatic hydrocarbons commonly termed "tars, " as well as other toxic elements in smoke, like formaldehyde, and sometimes the genetic absence of an enzyme (alpha-1-antitrypsin) in the smoker that causes it.
Answered 11/28/2013
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