When you take Advil Liqui-Gels, you’re not just swallowing ibuprofen — you’re taking it in a very different chemical state than a solid tablet. The key difference is molarity, which is the concentration of ibuprofen molecules per unit volume before your body even gets involved. In a traditional tablet, ibuprofen exists as a compressed crystalline solid. Nothing happens until the tablet disintegrates and the drug dissolves in gastric fluid. That dissolution step is slow because ibuprofen is poorly water-soluble and must cross a solid–liquid phase boundary before absorption can even begin. Liquid soft gels skip that bottleneck entirely. Inside the gelatin shell, ibuprofen is already dissolved in a non-aqueous solvent system (often polyethylene glycol, glycerin, or related co-solvents). That means the drug is stored as a pre-solubilized solution with a defined molarity. When the capsule dissolves, the body is immediately exposed to a high local concentration gradient of ibuprofen. Why ...