Interceptor Plus® Chewable Tablets for Dogs

Interceptor Plus is a monthly chewable for dogs that prevents heartworm disease and treats common intestinal worms. It combines two proven ingredients in a palatable tablet dogs readily accept. This page helps you compare sizes, understand safe use, and set up US delivery from Canada with clear, veterinary-label guidance. If you pay without insurance, you can still review options to manage out-of-pocket costs here.

What Interceptor Plus Is and How It Works

Interceptor Plus® active ingredients are milbemycin oxime and praziquantel. Together, they prevent heartworm disease and treat tapeworms, roundworms, hookworms, and whipworms in dogs. Milbemycin oxime targets immature heartworm larvae transmitted by mosquitoes, while praziquantel disrupts tapeworm integrity. The chew is given once monthly, year-round, to maintain protection. Learn more about the condition it prevents by visiting Heartworm Disease.

Border Free Health connects U.S. patients with licensed Canadian partner pharmacies; prescriptions are verified with prescribers before dispensing.

This medicine aligns with veterinary labeling for safety and spectrum. It does not treat fleas or ticks. For broader parasite plans, your prescriber may combine therapies that address Intestinal Worms plus external parasites when appropriate.

Who It’s For

Interceptor Plus for dogs is indicated for dogs and puppies at least 6 weeks of age and weighing 2 pounds or more. It is suitable for most breeds, including small and large dogs, when matched to the labeled weight band. Dogs with a history of neurologic disease, or breeds with known MDR1 gene sensitivity, may require additional caution under a veterinarian’s supervision.

This treatment is not approved for cats or other species. For species-appropriate options, explore Dog Medications and the broader Pet Medications catalog.

Dosage and Usage

Follow the Interceptor Plus dosage on the package that matches your dog’s weight. Give one chewable tablet by mouth once every month, on the same date each month. The tablet can be offered by hand, with a small meal, or placed in a treat if needed. Consistent monthly dosing helps maintain heartworm prevention and intestinal worm control.

Start year-round protection as advised by your veterinarian, especially in areas with mosquito exposure. If using a multi-medicine plan for external parasites, administer each product as directed on its label and keep a simple calendar to track dosing days.

Strengths and Forms

The chewable tablets come in color-coded weight bands to fit a range of dogs. Availability may vary by pack size and lot. Typical bands include:

• 2–8 lbs
• 8.1–25 lbs
• 25–50 lbs
• 50–100 lbs

Common pack sizes include 6 and 12 doses for monthly use. If your dog exceeds 100 pounds, your prescriber may combine tablets as guided by the label. Within this range, Interceptor Plus 8.1-25 lbs is a frequently selected size for medium dogs.

Missed Dose and Timing

If a monthly dose is missed, give the tablet as soon as you remember. Then resume the regular monthly date going forward. Missing multiple months may leave a gap in heartworm prevention; your veterinarian may recommend a heartworm test before restarting. Keeping a reminder on your phone or in a planner helps avoid gaps.

Storage and Travel Basics

Store tablets in the original packaging at room temperature, away from moisture and direct light. Keep out of reach of children and other pets. Do not use tablets past the expiration date. When traveling, carry the labeled box or a copy of the prescription to avoid delays. The blister protects each dose from humidity; open just before giving. Our partners use temperature-controlled handling when required.

Benefits

This treatment combines heartworm prevention with broad intestinal worm coverage in one monthly chew. The tablet is flavored to aid acceptance, and the color-coded bands make size matching straightforward. Having one monthly routine can simplify parasite protection plans compared with using separate dewormers on different schedules.

Side Effects and Safety

• Digestive upset: occasional vomiting or soft stool
• Decreased appetite: usually mild and transient
• Lethargy: short-term tiredness in some dogs
• Neurologic signs: rare; seek care if tremors or incoordination occur

Serious reactions are uncommon but require veterinary attention. Dogs with known hypersensitivity to milbemycin oxime or praziquantel should avoid this therapy. Breeds with MDR1 mutations may be more sensitive to macrocyclic lactones; your veterinarian can advise on monitoring. Report persistent vomiting, diarrhea, or neurologic changes promptly.

Drug Interactions and Cautions

Use caution when combining macrocyclic lactones with other medicines that affect P-glycoprotein. Always tell your veterinarian about all products your dog receives, including flea and tick preventives, dewormers, or any off-label therapies. Do not give more than the directed monthly dose unless a prescriber has instructed you to do so.

What to Expect Over Time

With steady monthly use, protection continues across seasons when exposure risk remains. Many dogs accept the chew as a treat, which helps adherence. Your veterinarian may recommend periodic fecal checks to assess intestinal parasite control and an annual heartworm test. If the routine is interrupted, a test may be needed before resuming prevention.

Compare With Alternatives

Some dogs use a single-agent heartworm preventive without tapeworm coverage. Interceptor® Flavor Tabs contain milbemycin oxime alone for heartworm prevention and certain intestinal worms; your prescriber may choose this for specific cases. For broader deworming focused on intestinal parasites, Drontal Plus is a vet-approved option used for tapeworms, hookworms, roundworms, and whipworms in dogs. Your veterinarian can help decide which approach best matches your dog’s risks and test results.

Pricing and Access

We list Interceptor Plus Canadian pricing so you can compare options and pack counts. Ordering includes secure checkout and clear updates on fulfilment. Products ship through licensed partners and arrive efficiently to U.S. addresses. This item Ships from Canada to US with transparent tracking.

To explore savings, compare 6- and 12-dose packs and discuss multi-pet planning with your prescriber. For occasional offers, visit our Promotions page. When ready, review Canada origin details and current availability. If you want to compare value across parasite conditions, see Intestinal Worms and Heartworm Disease resources. For buying guidance, our article on Buy Pet Medications Online outlines safe sourcing.

For clarity at checkout, you will upload your pet’s prescription so our pharmacy partners can verify it before dispensing. If your vet prefers to send it directly, that also works.

Availability and Substitutions

Stock can vary by size band and pack count. If a specific tablet size is unavailable, your prescriber may recommend an alternative weight band combination or a different preventive with a similar spectrum. We do not provide restock dates; your veterinarian can advise on appropriate interim options.

Patient Suitability and Cost-Saving Tips

Good candidates include dogs and puppies over 6 weeks and at least 2 pounds that need monthly heartworm prevention plus broad deworming. Dogs with certain neurologic histories or MDR1 sensitivity may need closer supervision. Keep a consistent monthly routine, and consider aligning dose days across pets to simplify tracking.

To manage costs, compare multi-month packs, coordinate refills to reduce separate order fees, and set calendar reminders for renewed prescriptions. If your dog switches weight bands as it grows, ask your prescriber about transitioning to the next size without gaps.

Questions to Ask Your Clinician

• Right spectrum: does this monthly preventive cover my dog’s risks?
• Timing: when should testing for heartworm occur each year?
• Combination plan: should flea and tick control be added separately?
• Puppy growth: when to change tablet size as weight increases?
• Monitoring: what signs after dosing should prompt a call?
• Travel: any regional parasite risks to plan for on trips?

Authoritative Sources

Elanco Product Page

FDA CVM FOI Summary

Tick Infestation

Ready to order Interceptor Plus? You can check pack sizes, upload your script, and set up US shipping from Canada with prompt, express shipping. This content is educational and not a substitute for your veterinarian’s advice.