For the general welfare of your pet, vaccinations offer protection from a variety of disease conditions. However, in some cases, like the yeast skin infections, medicines such as ketoconazole can have some side effects. However, the benefits of vaccination for serious diseases far outweigh the side effects that are mostly temporary.
In some cases, side effects can be more serious and carry more risk than the vaccinated disease that it protects against. Vaccine failures can also prove to be detrimental to your pet.
Side effects to vaccinations may include sleepiness, depression, irritability, nasal discharge, excessive bleeding, tenderness at site of injection, fever, hives, facial swelling, vomiting, diarrhea, swollen lymph nodes, and sometimes acute kidney and liver failure.
Vaccinations against canine parvovirus, canine distemper virus, canine adenovirus or hepatitis virus, feline panleukopenia, feline leukemia, and feline immunodeficiency virus can give rise to allergies, bowel inflammation, hypo or hyperthyroidism.
Side effects can be alleviated with medications like Metacam for pain, immunosuppressants like Cyclosporine, and Temaril-P for allergies and relief from cough, itching and inflammation. Apart from vaccination injects, even flea and tick medications have risks associated with them since some of them are known to have adverse reactions particularly in small dogs and cats.
It is also important to keep your pet free of infectious disease, improving its chances of a healthier and longer lifespan.