Trifexis is a chewable monthly tablet which controls the following parasites in dogs of Alta Loma, Rancho Cucamonga, Upland, Ontario, Claremont, Fontana, and the Inland Empire (not available for cats):

Trifexis can be administered to pets as young as 8 weeks of age and is safe at all life stages. The pill is administered with food and begins to kill fleas within 30 minutes of ingestion. By 4 hours all the fleas on the pet will be killed.

A blood test to check for the presence of heartworms in your pet is required for all dogs over the age of 6 months prior to administering Trifexis. This is done to prevent a possible adverse reaction which may occur if Trifexis is given to a pet with an active heartworm infection.