View our How to manage Heartworms video.
What is Interceptor Plus?
Interceptor Plus is a chicken-flavored chewable that kills the immature form of heartworm (Dirofilaria immitis). Interceptor Plus also treats and controls adult roundworms (Toxocara canis and Toxascaris leonina), hookworms (Ancylostoma caninum), whipworms (Trichuris vulpis), and tapeworms (Taenia pisiformis).
Who is it for?
Interceptor Plus is for dogs and puppies that weigh 2 lbs or more, and are 6 weeks of age or older. The safety of Interceptor Plus has not been evaluated in dogs used for breeding or in nursing females. Contact your veterinarian before using this product in pregnant, nursing, or breeding animals.
What are the benefits?
- Protects your dog against heartworm, roundworms, hookworms, whipworms, and tapeworms
- Easy-to-give chewables are flavored with real chicken and taste like treats.
How does Interceptor Plus work?
Interceptor Plus chewables contain the active ingredients milbemycin oxime and praziquantel. Milbemycin oxime eliminates the immature stage of heartworm larvae and also treats and controls adult roundworms, hookworms, and whipworms. Praziquantel is used for the treatment and control of adult tapeworms.
Is there a generic equivalent available?
How is it given?
Interceptor Plus must be administered monthly, preferably on the same date each month. Drs. Foster and Smith recommends (and our guarantee requires) that Interceptor Plus be given year round, although some veterinarians may recommend giving it only during the mosquito season. If given seasonally, the first dose must be given within 30 days of the dog's first seasonal exposure to mosquitoes and continuing until at least 6 months after the dog's last seasonal exposure to mosquitoes. Treatment with fewer than 6 monthly doses after the last exposure to mosquitoes may not provide complete heartworm protection. When switching from another heartworm preventive product to Interceptor Plus, the first dose of Interceptor Plus should be given within a month of the last dose of the former product.
Most dogs like the taste of Interceptor Plus chewables and will accept the chewable as a treat. The chewable can be given by hand or added to a small amount of dog food. The chewable should be administered in a manner that encourages the dog to chew, rather than to swallow without chewing. Chewables may be broken into pieces and fed to dogs that normally swallow treats whole. Watch the dog closely to be sure the entire dose has been consumed. If not entirely consumed, give another full recommended dose as soon as possible.
What results can I expect?
Interceptor Plus will kill immature heartworm larvae the dog was exposed to in the preceding month. It will treat an intestinal infection with adult roundworms, hookworms, whipworms, and tapeworms. It will not kill fleas.
What form(s) does it come in?
Please click on "More Information" for possible drug and food interactions with this medication.