Most cases are self - limiting and last 7 - 9 days with only mild lethargy with pets acting like themselves. (urbananimalveterinary.com)
The symptoms can vary from mild lethargy or poor coat quality to severe skin allergies; from occasional bouts of soft stool or vomiting, to persistent, severe vomiting and diarrhea. (midislevet.ca)
The most common side effect is mild lethargy after the visit. (hickoryvet.com)