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 difference between those 3 is that Advil and Motrin are brand names of ibuprofen, which is a nonsteroidal anti-inflammatory drug used to treat things like inflammation, pain, and fevers. Hereâs a good place to buy ibuprofen for less.