Dogs and cats that take Cerenia, an anti-vomiting medication generally used for motion sickness, will typically experience some drowsiness or lethargy. Common side effects also include allergic reactions, such as hives or difficulty breathing, and drooling, according to 1-800-PetMeds.
More severe side effects of this drug include diarrhea, seizure, coma and shock. The Cerenia company, however, claims that these side effects are rare. If they occur, the company suggests immediate treatment by a veterinarian to avoid further complications. Doctors or owners can administer Cerenia by injection, for dogs or cats, or with an oral tablet, for dogs only. Other side effects not listed may occur, although they are unlikely, reports 1-800-PetMeds. Additionally, repeated use may lead to skin irritation or sensitivities.
Humans who handle the drug should wash their hands after every use and avoid getting the medication near their mouths or eyes. Any owner whose eyes come in contact with the drug should flush them immediately with water for 15 minutes and seek medical attention. When giving the drug to a pet, owners should withhold food for one hour, administer the drug and then wait two more hours before driving. This prolonged period ensures that the drug takes maximum effect, explains 1-800-PetMeds.