Unfortunately we are currently not able to sell Novartis made products such as Interceptor, Sentinel, Capstar and Program to US customers.
Instead of using Interceptor or Sentinel, we recommend using Revolution together with an allwormer such as Canex Multispectrum.
By using Revolution and Canex together, your pet gets better protection as these products cover your pet not just from heartworm but also flea infestations and ear and sarcoptic mites in dogs and all gastrointestinal worms in dogs including roundworm, hookworm, whipworm and tapeworm including hydatid tapeworm.