Other symptoms are more severe and call for immediate medical treatment. Some symptoms may not immediately alert you that you’ve had too much caffeine because they may not seem serious. Several types of symptoms occur with this condition. What are the symptoms of caffeine overdose? This wide range in average half-life makes it difficult to know the exact amount of caffeine that can lead to overdose. This means it can take anywhere from 1.5 to 9.5 hours for the level of caffeine in your blood to drop to half of its original amount. The average half-life of caffeine in the blood ranges from 1.5 to 9.5 hours. However, what constitutes a safe amount of caffeine differs for everyone based on age, weight, and overall health. Pregnant women should limit their daily intake to less than 200 mg of caffeine per day, since the effects of caffeine on the baby are not fully known. Caffeine overdose may occur if you ingest more than this amount.Īdolescents should limit themselves to no more than 100 mg of caffeine per day. Some of the most popular beverages in the United States, such as coffee, tea, and soda, contain significant amounts of caffeine.Īccording to the Mayo Clinic, the recommended amount of caffeine is up to 400 milligrams per day for healthy adults. It’s commonly used to keep you awake and alert. Caffeine is a stimulant found in various foods, drinks, and other products.

Effects of too much caffeine