Contains feline rhinotracheitis, calici, panleukopenia (distemper) and chlamydia psittaci viruses. This is an all killed virus vaccine. Can be given to kittens as early as 10 weeks of age.
For your cats protection, it is recommended that vaccinate it cat with this vaccine on an annual basis.
Consult your veterinarian for details on this and other vaccines as well as their administration.