You should not use this medication if you are allergic to acetaminophen (Tylenol) or aspirin. Do not give this medication to a child or teenager with a fever, flu symptoms, or chicken pox. Salicylates can cause Reye's syndrome, a serious and sometimes fatal condition in children.
But excessive vomiting over a long period of time can be a sign of something else. Viruses like the flu can cause a person to have a high fever, dizziness and excessive vomiting. The lining of the stomach wall can become affected and nausea and vomiting can occur.
Diseases of the stomach and upper intestinal tract are the primary cause for this type of vomiting. Secondary implications are diseases of other organs, which bring about an accumulation of toxic substances in the blood, stimulating the vomiting center in the cat's brain.