https://www.usatoday.com/story/money/shopping/2021/09/17/chantix-recall-2021-pfizer-cancer-risk-smoking-cessation-drug/8385350002/

one link to the story. Basically chantix was to help people stop smoking so they could lower their risk of cancer. it did not work that way evidently, it raised a persons risk of cancer.

Covid vaccine supposed to lower your risk of covid, just not the delta variant.