The System for Award Management (SAM) is an official website of the U.S. government. There is no cost to use SAM. You can use this site for FREE to: Register to do business with the U.S. government. Update or renew your entity registration. Check status of an entity registration. Search for entity registration and exclusion records.
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. Several factors can shorten or lengthen the half life of caffeine. Smoking, medications and diseases are some factors.
Medical conditions, age can also be a part in altering the half life of caffeine. The remaining amount of caffeine in your body can stay up to 8-14 hours, depending on the dose and intake amount. The amount of caffeine taken in plays a big factor in keeping your body free of most of the side effects.