For example, the popular diet soda's caffeine content still pales in comparison to a 12-ounce cup of coffee which contains around 140 milligrams of caffeine.

Guarana is high in caffeine and is derived from the seeds of a South American tree. Learn about the health benefits, dosage, and side effects of this supplement.

Big Number For many teens, caffeine is a regular part of their diet The most common sources were soda, tea, coffee and energy drinks, according to a nationally representative survey.

With a high sugar content and possible adverse effects from diet sodas, in excess, they can be a hazard to our health. Here’s what an expert has to say about making the healthiest choice.

The 1980s soda Jolt Cola is coming back to shelves in 2025 with more than twice its original caffeine content as the nostalgic pop seeks to make a splash in the energy drink market.

The recommended amount of caffeine is usually 400 mg per day for healthy adults. Caffeine overdose may occur if you ingest more than this amount. A 12-ounce cup of black coffee contains 260 mg of ...

Here is the caffeine content of some popular coffees, sodas and energy drinks, to help you get a better idea of how close a single serving comes to the recommended 400 milligrams of caffeine for ...

Its high sugar and caffeine content make it one of the more problematic sodas — especially for individuals trying to manage energy levels and maintain a healthy diet.

Read a <i>National Geographic</i> magazine article about caffeine and get information, facts, and more about caffeinated drinks.