Laxatives

Chapter 1

Osmotic laxatives



Image obtained from Wellcome Collection: ‘Blue Pills’ were found in many pharmacies and dispensing chemists throughout the 1800s and beyond. Used for a range of ailments as varied as constipation, tuberculosis and toothache, Blue Pills contain mercury and were potentially toxic, slowly poisoning the patient. The mercury content also hints at one of their other uses – as a medicine against the venereal disease, syphilis.


Pills and treatments were often placed in earthenware dispensing pots like this one, which were covered with brown paper or vellum and tied with string. This example has the name of the pharmacist, “T C Lester”, and his address painted on to the side.


Maker: T C Lester

Place made: Kingston upon Hull, East Riding of Yorkshire, England, United Kingdom

Made: 1880-1930

Open Question

How do osmotic laxatives work? Give me examples of osmotic laxatives.

Open Question

Is lactulose only used to treat constipation?

Mutliple Choice Question

As you would have guessed, laxatives are used to aid the process of emptying one's bowels. However, the indications for the different osmotic laxatives can vary slightly. From the options below, which option do you think most accurately describes the indication for the laxative listed?