Castor Oil

Castor oil, produced from castor beans, has long been considered to be of important commercial value primarily for the manufacturing of soaps, lubricants, and coatings, among others. 

Castor oil is a unique natural product used in many industries and many types of products. With its 85–90% content of the hydroxy FA ricinoleic acid, castor oil provides this FA at the equivalent of a technical grade of purity, a rare natural phenomenon.

Uses
Castor oil is used to treat constipation. It may also be used to clean out the intestines before a bowel examination/surgery. 

Castor oil is known as a stimulant laxative. It works by increasing the movement of the intestines, helping the stool to come out