Excipient (pharmacologically inactive substance)
What is it?
Confectioners’ sugar, also known as powdered sugar or icing sugar, is a ultra fine sugar with a smooth and powdery consistency. Confectioners’ sugar is available in several degrees of fineness, from XX to 10X, and the finest is 10X. It is often used in home baking and may contain a very small amount of cornstarch to prevent caking. in the pharmaceutical industry, sugar has many uses: it can be used as a base for medicated confectionery; granulating agent; sugar coating adjunct; suspending agent; sweetening agent; tablet and capsule diluent; and as a viscosity-increasing agent.
 Dave RH. Overview of pharmaceutical excipients used in tablets and capsules. Drug Topics (online). Advanstar. 10/24/2008 http://drugtopics.modernmedicine.com/drugtopics/Top+News/Overview-of-pharmaceutical-excipients-used-in-tabl/ArticleStandard/Article/detail/561047. Accessed 08/19/2011