Oral liquids are homogeneous liquid preparations, usually a solution, an emulsion or a suspension of one or more active ingredients in a suitable liquid base. They are prepared for oral administration as such or after dilution. They may contain other substances such as suitable dispersing, solubilizing, ...

Aqueous solutions contain one or more drugs dissolved in water. There are 2 categories: solutions for oral use and solutions for injection which are sterile liquids or suspensions packed in suitable containers. The most common aqueous vehicles for injection preparation are water for injection and sodium ...