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 pain reliever in AdvilÂ® is ibuprofen, which is part of a class of drugs called non-steroidal anti-inflammatory drugs (also known as NSAIDs). AdvilÂ® does not contain acetaminophen, the active ingredient in TylenolÂ®. Weâve put AdvilÂ® up against TylenolÂ® in 30 different pain studies. AdvilÂ® remains the undefeated champion of tough pain relief.