Webhere’s a strategy to try when you’re finally ready to ditch the caffeine: Today, have your usual amount of coffee. Day 2 to day 5: Blend your regular coffee with. Fast heart beat or palpitations. Nausea or stomach discomfort. Whether you’re experiencing negative side effects or simply want to reduce. To reduce the effect of caffeine, your best bet is to wait it out and avoid drinking more coffee. You can also help the process along by staying. Webwe put together the essential caffeine cheat sheet, covering everything from starbucks to red bull, so you can make sure you're getting the maximum mental boost.