Advil liquid capsules work faster than tablets, according to their manufacturer Pfizer. The capsules break down much more quickly in the stomach than the tablets, and they release a form of the pain medicine that can be more quickly absorbed by the body.
Advil tablets must be broken down and dissolved in the stomach before the medicine can be absorbed by the intestines and transported through the bloodstream. The gel caps contain a form of liquid medicine that is already solubilized and is ready to be absorbed through the intestines. Both medicines then work by being transported through the bloodstream to the area in pain, notes Pfizer.