Breaking these large molecules into smaller components involves: 1  movement: propels food through the digestive system. 2  secretion: release of digestive juices in response to a specific stimulus. 3  digestion: breakdown of food into molecular components small enough to cross the plasma membrane.
Over-the-counter pain relievers, like Advil (ibuprofen), Aleve (naproxen sodium) and Tylenol (acetaminophen), are presumed to be safe. Since they don't require a prescription, directions and warnings aren't always taken seriously.
The two active ingredients in AdvilÂ® PM products, ibuprofen and diphenhydramine, have a long history of safe and effective use when used as directed. Ibuprofen has been available for over-the-counter use for over 30 years and diphenhydramine has been used for over 50 years.