Take aspirin daily forever, if your stomach hurts, stop. Start again.
https://www.wsj.com/articles/SB10001424052748704511304575075...
https://www.theguardian.com/society/2020/aug/03/painkillers-...
https://www.nytimes.com/2019/03/18/health/aspirin-health.htm...
https://www.npr.org/sections/health-shots/2018/09/16/6474154...