https://www.vetsurgeon.org/f/non-clinical-questions/14781/evergreening-in-human-medicine http://www.bbc.co.uk/news/business-21991179 We're not the only ones who get hit by sharp practice on the part of drug companies: evergreening, where drug companies make minute changes to existing drugs in order to get a new patent and thus 'discourageen-USTelligent Community 10