That's interesting that nicotine could work as a brain booster. I remember back in the covid days that people that smoked were not getting covid at a high a rate as the rest and there were some articles about that. Nicotine has a stigma associated with it but it is not carcinogenic but could have negative outcomes for the heart and blood pressure or that is what they say in their medical papers.
Molecular insights into the benefits of nicotine on memory and cognition (Review) - PubMed
Im heart healthy enough to experiment with it and see how it goes.
At around fifty bucks for 240 pieces its not cost prohibitive for me.