Interceptor
Interceptor is a brand-name veterinary medication primarily used as a monthly heartworm preventive for dogs and cats. It also provides protection against certain intestinal parasites including roundworms, hookworms, and whipworms. The medication is administered orally and is typically given year-round or seasonally depending on geographic location and veterinary recommendation.
Interceptor is a monthly heartworm and intestinal parasite preventive for dogs and cats.
Key facts at a glance
- RxNorm
- 95758
- Generic
- Interceptor
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Prevention of heartworm disease caused by Dirofilaria immitis. Treatment and control of roundworm, hookworm, and whipworm infections in dogs and cats.
The active ingredient, milbemycin oxime, interferes with nerve transmission in parasites, causing paralysis and death of susceptible parasites.
Must be tested for heartworm infection before starting treatment. Tablets should be given with food for optimal absorption. Common side effects may include vomiting, diarrhea, or lethargy. Keep out of reach of children.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy