Green tea extract and caffeine are often combined in supplements to enhance energy, focus, and fat metabolism. When taken together, they may offer synergistic benefits but raise the risk of side ...

In this method, caffeine is extracted from tea. The type of tea that is used isn't very important (as long as it is ...

Both coffee and green tea can boost energy and support your heart. Experts say the best one for you depends on your health ...

Hibiscus tea may have benefits for heart health and weight management. It is a zero-calorie, caffeine-free herbal tea that is ...

Drinking green tea with L-theanine can cause calm alertness because the caffeine in the tea wakes you up, while L-theanine promotes relaxation.