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Simparica TRIO for dogs is one of the common flea and tick treatments that veterinarians generally recommend. And pet parents usually want the same handful of answers: what's actually in it, what it does and doesn't cover, how often to give it, and whether it's right for their dog. If you want to understand it before your dog's next dose, this blog covers everything you need to know about Simparica TRIO for dogs in detail.

Keep on reading!

What is Simparica TRIO for Dogs?

Simparica TRIO is a monthly chewable tablet for dogs. It comes in a highly palatable pork liver-flavored chew form for easy administration. Simparica TRIO combines three active ingredients in one dose: sarolaner, moxidectin, and pyrantel, to provide protection against several types of parasites, including external parasites like fleas and ticks, plus heartworm and certain intestinal worms.

What Does Simparica TRIO Protect Dogs Against?

Heartworm disease:

Simparica TRIO is indicated for the prevention of heartworm disease caused by Dirofilaria immitis. Simparica TRIO is intended for preventive use only, so dogs should be tested for existing heartworm infection before administration.

Fleas:

Simparica TRIO kills adult fleas before they can lay eggs and is indicated for the treatment and prevention of flea infestations by killing adult fleas. As a result of killing those fleas, it also prevents infection with the flea tapeworm, Dipylidium caninum, which dogs can acquire by swallowing infected fleas.

Ticks:

Simparica TRIO is labeled for the treatment and control of six tick species: the lone star tick, Gulf Coast tick, American dog tick, black-legged tick (deer tick), brown dog tick, and Asian longhorned tick. Simparica TRIO is also indicated for the prevention of Borrelia burgdorferi infections, the bacterium associated with Lyme disease, as a direct result of killing ixodus scapularis (black-legged ticks) vector ticks.

Roundworms and hookworms:

Simparica TRIO is indicated for the treatment and control of roundworm (Toxocara canis and Toxascaris leonina) and hookworm (Ancylostoma caninum and Uncinaria stenocephala) infections, covering both immature and adult stages of these worms depending on species.

How Does Simparica TRIO Work?

Simparica TRIO contains three active ingredients: sarolaner, moxidectin, and pyrantel pamoate. Each ingredient works through a different mechanism.

• Sarolaner inhibits the GABA and glutamate receptors, and works at the neuromuscular junction in insects, causing uncontrolled neuromuscular activity that leads to death of parasites.
• Moxidectin interferes with the chloride channel-mediated neurotransmission in the parasites, causing paralysis and death in them.
• Pyrantel pamoate targets susceptible parasites. It acts as a depolarizing neuromuscular-blocking agent, causing paralysis and death or expulsion of the organism.

How to Give Simparica TRIO?

The Simparica TRIO dose is based on your dog's body weight. The treatment is given once monthly, with different tablet strengths designed for different dog weight ranges.

According to the official dosage schedule, tablet strength increases across six weight ranges, from dogs as small as 2.8 pounds to dogs weighing up to 132 pounds, with dogs over 132 lbs receiving a combination of tablets as needed.

Simparica TRIO Dosage Administration:

Weigh your dog regularly, especially if they are close to a dosing-range cutoff, and ask your veterinarian which tablet strength is appropriate.

• Offer Simparica TRIO to your dog with or without food.
• For heartworm prevention, Simparica TRIO should be administered at monthly intervals year-round or at least within a month of a dog's first seasonal mosquito exposure, and continued monthly through at least a month after the dog's last exposure.
• If a Simparica TRIO dose is missed, the label directs giving the missed dose immediately and resuming the regular monthly schedule from there.
• For fleas and ticks, Simparica TRIO should be administered year-round at monthly intervals or started at least one month before fleas or ticks become active.
• For intestinal worm treatment, one dose of Simparica TRIO treats and controls the specific roundworm or hookworm infection, and continued monthly dosing controls any subsequent infections.

This is general label guidance, not a personalized dosing recommendation. Your veterinarian can determine the exact tablet size and schedule appropriate for your dog.

Which Dogs Can Take Simparica TRIO?

Simparica TRIO is approved for dogs and puppies 8 weeks of age and older, weighing at least 2.8 pounds. It can be given with or without food. The safe use of Simparica TRIO has not been evaluated in breeding, pregnant, or lactating dogs.

Safety: Use Simparica TRIO with caution in dogs with a history of seizures or neurologic disorders.

Final Thoughts

Simparica TRIO for dogs is a three-ingredient, once-monthly oral preventive with a broad range parasite protection, including heartworm prevention, treatment and prevention of flea infestations, and treatment and control of tick, roundworm and hookworm infestations.

That comprehensive parasite coverage is the main reason why Simparica TRIO is widely used among pet parents and veterinarians instead of managing multiple separate products. If you're trying to decide whether Simparica TRIO is right for your dog, talk to your veterinarian. They can help you with a customized solution based on your dog's age, weight, parasite exposure, lifestyle, and health condition.

Frequently Asked Questions

1. How fast does Simparica TRIO work to kill ticks and fleas?

Simparica TRIO starts to kill fleas at 4 hours of administration, and shows high efficacy against different tick species within 24 to 72 hours of administration.

2. Does Simparica TRIO treat all types of tapeworms?

Simparica TRIO is indicated for preventing the flea tapeworm (Dipylidium caninum), and that protection occurs by killing fleas that transmit the tapeworm. If your dog has a different tapeworm species, talk to your veterinarian to know whether a separate dewormer is needed.

3. Does my dog need a heartworm test before starting Simparica TRIO?

Yes, dogs should be tested for existing heartworm infection before starting, because this product doesn't treat adult heartworms and is not effective against adult heartworms in dogs with an existing infection.