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It prevents the flea egg from hatching.  It lasts 30 days in your pet's system.  IT DOES NOT  KILL ADULT FLEAS.  FDA approved for use in dogs and cats. Available over-the- counter

 Lufenuron is stored in the body fat and released into the bloodstream over the course of a month. Flea eggs laid prior to treating the pet may take several months to hatch. Therefore it may take several months to see the product’s effectiveness. Always treat with a Nitenpyram management plan.


Oral lufenuron does not typically cause side effects when used as directed. Rarely, itchy skin, lethargy, diarrhea, and vomiting may occur.   Will not prevent flea bites from living fleas, and it may not be a good choice for animals with a flea bite allergy. This drug is not for use in animals under 6 weeks of age. Lufenuron does not interact with other medications or affect the treated animal's system.

It is compatible with other treatments.  Lufenuron should be used in combination with other flea control management like Nitenpyram. Should not be used in animals with a known allergy or hypersensitivity to it. Any known or suspected overdose should be reported to a veterinarian right away.




Generic Drug Name: Lufenuron
Other Common Names: Program

Lufenuron is a treatment for fleas on cats and dogs. It is not effective against ticks.  It does NOT kill adult fleas. It belongs to the group of drugs called insect development inhibitors or insect growth regulators.

Lufenuron works by inhibiting production of chitin, which is the material that makes up the hard exoskeleton that protects insects.   IT IS FOR MAINTENANCE ONLY.  WE SUGGEST USING IT IN CONJUNCTION WITH NITENPYRAM.



Must be administered on a full stomach for proper absorption by the body. In the event a dose of lufenuron is missed, it should be administered as soon as possible. If it is almost time for the next scheduled dose, the missed dose should be skipped and a normal schedule should be resumed. It is important not to give two doses of this drug at the same time.


This information is for general reference only and should not be used for the diagnosis or treatment of any condition of your pet. It's intended as a general reference, this information may not include all possible uses, precautions, directions, reactions (including allergic), drug interactions, or withdrawal times. Always consult your local veterinarian and have your pet examined for any advice concerning the diagnosis and treatment of your pet, including which products and doses are most appropriate. Any trademarks are the property of their respective owners. USE AT YOUR OWN RISK KEEP AWAY FROM CHILDREN NOT FOR HUMAN CONSUMPTION.  WE MAKE NO CLAIMS AS TO HEALTH BENEFITS.  THIS INSECT INHIBITOR (LUFENURON) IS A OVER-THE-COUNTER (OTC) PRODUCT AND NO PRESCRIPTION IS REQUIRED.

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