Skip header
Free Shipping Over $49
Live Customer Care
Monday-Friday: 8AM - 7PM EST
Saturday: 9AM - 5PM EST
My ProfileMy OrdersMy AutoShipMy RxMy PetsMy VetsMy RewardsSign In
Save Up To 10% On Your First AutoShip

Interceptor for Dogs and Cats Rx

4.89 out of 5 stars
This Item Ships FREE!
Save 5% on your 1st AutoShip order and 5% on all future AutoShip orders

Please confirm

This item is already on your autoship schedule! Are you sure you want to add it again?
Weight and Color:*
Month Supply:*

Product Overview

How To Use

What’s in it?


Questions & Answers

Product Description

Interceptor flavor tabs are used to control and remove whipworm and adult roundworm infections in puppies four weeks and older and 2 pounds or more, dogs, and cats; prevent heartworm disease caused by Dirofilaria Immitis; and control adult hookworms. See the Allivet Heartworm Comparison chart to find which heartworm prevention is best for your pet.

What is Interceptor for Dogs and Cats?

Interceptor treats heartworms in dogs, The palatable once-a-month tablet that prevents heartworm disease, controls adult hookworm, and removes and controls adult roundworm and whipworm infections in dogs, puppies and cats.

Who is Interceptor for Dogs and Cats for?

For use in cats and dogs.

Why use Interceptor for Dogs and Cats?

Features of Interceptor:
  • Cats and dogs love the taste
  • Protects against 4 major types of worms: whipworms, roundworms, hookworms, and heartworms
  • Once-monthly, easy-to-use pill

How does Interceptor for Dogs and Cats work?

Interceptor kills adult hookworms (Ancylostoma caninum), whipworms (Trichuris vulpis), and roundworms (Toxocara canis), and heartworm larvae in the tissue stage, when orally administered following the suggested dosage schedule. The anthelmintic action of milbemycin oxime is thought to be caused by interference with invertebrate neurotransmission.



Active ingredient(s):

Milbemycin Oxime

How is Interceptor for Dogs and Cats sold?

6 Month and 12 Month Supplies that are color coded according to your pet's weight.
  • Green: 1.5 - 6 lbs cats and 11-25 lbs dogs
  • Brown: 2 - 10 lb dogs
  • Yellow: 6.1 to 12 lbs cats and 26-50 lbs dogs
  • White: 12.1 to 25 lbs cats and 51 - 100 lbs dogs

What are the side effects of Interceptor for Dogs and Cats?

Potential side effects include:
  • Salivation
  • Weakness
  • Convulsions
  • Decreased appetite
  • Incoordination
  • Lethargy
  • Depression
  • Diarrhea
  • Vomiting

What special precautions are there?

  • Keep out of reach of animals and children.
  • Interceptor has been proven for safe use in most dogs. Dogs should be tested for heartworm prior to use. Dogs with heartworm should receive treatment prior to starting Interceptor, unless otherwise directed by a veterinarian.

What to do if overdose?

In case of overdose, contact your closest pet hospital

How can I store Interceptor for Dogs and Cats?

Store in a dry and cool place.

Helpful Tips:

  • Over half a billion doses of Interceptor have been prescribed!
  • 95% of dogs accept the tablet.
  • Trusted by veterinarians for over 20 years.

Pharmacists are standing by to offer Pet Parent counseling regarding prescription medication purchased from Allivet before and after dispensing. Pharmacists on duty are available Monday-Friday, 9:30AM - 5:30PM EST and will be on call Saturday 12:00PM - 4:00PM EST for consultation.


Dog Weight

Package Color

Active Ingredient/Tablet

Tablet Imprint

Up to 4.5 kg


2.3 mg


5 to 11 kg


5.75 mg


12 to 22 kg


11.5 mg


23 to 45 kg


23 mg


The minimum dosage level is 0.5 mg/kg of body weight.
Dogs weighing over 45 kg should receive the appropriate combination of Flavor Tabs.

Main Ingredients


Interceptor Brown (Dogs 2-10 lbs):

Active Ingredients (per flavor tab)


Milbemycin Oxime

2.3 mg


Interceptor Green (Dogs 11-25 lbs, Cats 1.5-6 lbs):

Active Ingredients (per flavor tab)


Milbemycin Oxime

5.75 mg


Interceptor Yellow (Dogs 26-50 lbs, Cats 6.1-12 lbs):

Active Ingredients (per flavor tab)


Milbemycin Oxime

11.5 mg


Interceptor White (Dogs 51-100 lbs, Cats 12.1-25 lbs):

Active Ingredients (per flavor tab)


Milbemycin Oxime

23 mg



Write a Review

Interceptor for Dogs and Cats

Ask a New Question

Don’t know something or can’t find the information you are looking for? Ask us a question!

*Required Fields
We will ONLY use your email to notify you in regards to your submission.Privacy StatementQuestions & answers are typically posted within 24 hours, pending approval.