We all know coffee, energy drinks, and certain sodas contain caffeine. This stimulating substance—which can be natural or synthetic—can show up in many surprising sources, like decaf coffee ...

Medically reviewed by Maggie Moon, MS, RD Coffee is a natural caffeine source that has long been studied for its health ...

Caffeine is a natural stimulant that primarily affects the central nervous system. It blocks adenosine, a neurotransmitter responsible for promoting relaxation and sleep, which leads to increased ...

One of the best things about Nutricost Guarana Supplement ... seed extract in each quick-release capsule, providing a natural source of caffeine that helps us power through the day without feeling ...

Here are three effective methods to reduce this issue. Stay Hydrated Caffeine is a natural diuretic, which means it can lead to dehydration. When the body is dehydrated, it tends to hold onto ...

Some turn to a natural alternative ... The word "caffeine" is derived from the Arabic word "qahweh" which means coffee. Today our primary sources of caffeine are coffee beans (Caffea arabica ...