Some recent research points to Tylenol affecting emotions and making people feel less empathy: https://www.webmd.com/mental-health/news/20180206/do-otc-painkil

Some recent research points to Tylenol affecting emotions and making people feel less empathy: https://www.webmd.com/mental-health/news/20180206/do-otc-painkillers-alter-emotions-reasoning https://www.webmd.com/mental-health/news/20180206/do-otc-pai... https://www.healthline.com/health-news/do-painkillers-make-you-less-empathic https://www.healthline.com/health-news/do-painkillers-make-y... Apparently it can make men more sensitive to emotionally painful experiences and women less sensitive to them.