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“IQOS” (pronounced EYE-kose) is an alternative to cigarettes that uses heat rather than fire to deliver its nicotine payload.  

The Food and Drug Administration (FDA) first allowed its sale as a “modified risk” tobacco product in the United States in 2019. However, the FDA also made clear that IQOS cannot be endorsed or promoted as “safe” or "FDA approved." 

“All tobacco products are potentially...