The dangers of taking medication while running comrades

For those who are not aware of NSAID's (non-steriodal anti inflammatory drugs) could you please explain what they are? NSAID's are a class of drugs which reduce inflammation and pain following an injury or infection.

Date
: 06 December 2013
Author
: Boulter, Jeremy
Year
: 2012
Publication
: 2012 Souvenir Brochure of the Comrades Marathon
Publication Page
: 64
Media Type
: Article
Document