These microbes exist symbiotically with the digestive system and, research shows, support energy harvesting, digestion, and immune defense. Eamonn Quigley, MD, the chief of gastroenterology and ...

Adderall is a central nervous system (CNS) stimulant. This class of drugs helps boost mood, alertness, attention, and energy by raising the levels of certain chemicals in the brain. How each CNS ...