In response to the growing popularity of spot - ons, some manufacturers have released generic versions of popular flea and tick prevention brands. (petbusiness.com)
By the end of 2012, three dozen of the world's top brand - name drugs had lost patent protection, paving the way for cheaper generic versions. (sciencemag.org)
One could obtain prescriptions for each and get generic versions mix them, and save alot of money. (slaw.ca)