A caffeine overdose occurs when you get too much of this energy source through drinks, foods, or medications. However, some people are able to use more than the recommended daily amount per day with no problem. This is not recommended as high doses of caffeine can cause some serious health problems such as irregular heartbeat and seizures.

Caffeine is a stimulant found in coffee, tea, soda, etc. It helps keep you alert and focused. Too much caffeine can cause a number of health problems.