Cerenia Side Effects Dogs. The most common side effects seen in dogs and cats administered cerenia are pain/vocalization (injectable), depression/lethargy, anorexia, anaphylaxis, ataxia, convulsions, hypersalivation, and vomiting. Always check with your vet if you notice any of these side effects while giving cerenia.

Loss of coordination * the risk can be reduced by feeding your dog a light snack an hour before giving them the medicine. Other cerenia side effects in dogs include inflammation of the ear (3 dogs out of 206, 1.5 percent), endotoxic shock (2 dogs out of 206, 1 percent), blood in urine (2 dogs out of 206, 1 percent) excoriation, presence of erosion or ulceration caused by scratching, biting or rubbing ( 2 dogs out of 206, 1 percent). Anorexia, depression/lethargy, hypersalivation, vomiting, and.