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Flea Treatment in Lactating Cats


Authors: Dr. Victry Fredley
Document Type: FAQs
Species: Feline

An individual consulted with their veterinarian about Revolution Plus, but the veterinarian was unsure if it was considered safe for lactating mothers. Dr. Fredley discusses what Revolution Plus is labeled for and some other labeled options for lactating queens.




I am trying to find out if it would be acceptable to give a nursing momma Revolution Plus. My vet was unsure if it would be passed thru the milk to the babies and advised I reach out.




According to the package insert the safe use of Revolution Plus has not been evaluated in kittens less than 8 weeks of age and has not been evaluated in breeding, pregnant, or lactating cats. Revolution Plus is a newer product on the market that includes the active ingredients selamectin and sarolaner. Revolution Plus is indicated for the prevention of heartworm disease and for the treatment and prevention of flea infestations. It is also indicated for the treatment and control of tick infestations, ear mite infestations, and roundworm and intestinal hookworm infections for one month in cats and kittens 8 weeks and older, and weighing 2.8 pounds or greater.


There are other products that can be used in lactating cats including selamectin, sold as Revolution (not the Plus version). The original Revolution (selamectin) topical product is labeled safe to use in breeding males/females, as well as pregnant and lactating queens. Revolution has a similar spectrum of parasite coverage as - heartworm prevention and flea, hookworm, roundworm, and ear mite treatment. It is not labeled for the treatment of tick infestations, so a different product should be selected if ticks are a concern for cats in your area. In order to receive the best treatment for your cat, you should further discuss with your veterinarian if original Revolution is an adequate alternative.  


I hope this helps and please let us know if you have any more question.


University of Wisconsin Shelter Medicine Program

Victry Fredley, DVM
Shelter Medicine Program Resident
Oregon Humane Society
On behalf of UW Shelter Medicine Program