Head to Settings and tap on the More tab at the end of the Wireless & networks tab. Step #1. image. Once inside, swipe to the bottom and hit the Emergency broadcasts button.
I have also heard that drinking peppermint tea (herbal) is good.The time it takes for the body to eliminate one half of a caffeine dose is normally between 3 to 12 hours. It is called the half-life of caffeine. Source(s): http://www.coffeefaq.com/site/node/127. seashells Â· 7 years ago. Thumbs up.
These discontinuation effects may persist long after caffeine has been fully cleared from your system. Most sources suggest that the average plasma half-life of caffeine in healthy adults is within the range of 3 to 5 hours. Though 50% of the drug may be cleared from your body within 5 hours, it will take ~1.15 days to fully eliminate caffeine from your system.