The main adverse reaction to the drug was a reduction in food intake, which was observed in 4 of 9 treated cats. (vetmed.ucdavis.edu)
Visit the Vet While it is second nature to want to alleviate the pain, be careful when administering drugs the dog can have an allergic reaction to the drug in question. (dogingtonpost.com)
When they learn about bad reactions to the drug they are legally required to report them, but they do not regularly survey patients as they do during the approval process. (scientificamerican.com)