In extremely rare cases, if your animal experiences repeated vomiting or diarrhea, difficulty breathing, swelling of the face or legs, please contact your local veterinarian immediately. (lowcountrypetvaccineclinic.com)
Signs of an allergic reaction include repeated vomiting or diarrhea, whole body itching, swelling of the face or legs, difficulty breathing or collapse. (web-dvm.net)
They can also have repeated vomiting due to nausea. (homevet.com)