Sugarcoating pills is fairly common, especially for pills which are frequently ingested or target older demographics. It’s because sugar coatings are much gentler on the esophagus (i.e.: less likely to cause esophagitis, “pill burn”). Advil (i.e.: ibuprofen) is a cheap, well tolerated, and non habit-forming pain reliever – it’s about as safe as such a thing could possibly be, so hopefully that helps to explain why a sugar coating might be warranted given the aforementioned upsides (for the love of all that is holy; always read the directions on the label, it’s still quite possible that Advil is not safe for you specifically). FWIW: the bottles also have childproofing mechanisms built into the caps (… at least in U.S. markets. Not sure about elsewhere?)