Sarolaner for Scorpion: Uses, Dosing & Side Effects

This information is for educational purposes only. Never give your pet any medication without your veterinarian's guidance. Dosing, frequency, and safety depend on your pet's specific health profile.

Sarolaner is a prescription isoxazoline antiparasitic medication. In veterinary medicine, it is used in dogs as the active ingredient in Simparica and in Simparica Trio with moxidectin and pyrantel. It is also part of Revolution Plus for cats, where it is combined with selamectin. It works by targeting the nervous system of certain parasites, especially fleas and ticks.

The title of this page can be confusing: sarolaner is not a medication for scorpions. There is no standard veterinary use of sarolaner in pet scorpions, and dosing information for scorpions is not established in mainstream veterinary references. If your scorpion has mites, weakness, trouble molting, or another health concern, your vet may recommend environmental changes, supportive care, or a different treatment plan instead of this drug.

For pet parents with dogs or cats in the home, sarolaner is most often discussed as a monthly parasite preventive. Because it is species-specific and weight-based, products made for dogs should never be used in cats unless the label specifically says so, and products for mammals should not be used in invertebrates unless your vet gives direct instructions.

In dogs, sarolaner is FDA-approved to treat and prevent flea infestations and to treat and control several tick species for about one month. In combination products, it may also be part of broader parasite prevention plans that include heartworm prevention and intestinal parasite control.

In cats, sarolaner is not typically used by itself. Instead, it appears in the topical product Revolution Plus, where it helps control fleas and ticks while selamectin covers other parasites such as heartworms, ear mites, roundworms, and hookworms.

Your vet may also discuss isoxazoline medications for certain mites in selected dogs or cats. Some mite uses are off-label, which means the medication is being used in a way not specifically listed on the label but supported by veterinary evidence and clinical experience. That decision depends on species, age, neurologic history, and the parasite involved.

For scorpions and other exotic invertebrates, sarolaner is not a routine or established treatment. If a pet parent is searching for sarolaner for a scorpion, that is a strong reason to pause and contact your vet before giving anything. Invertebrates process medications very differently from dogs and cats, and a mammal dose cannot be safely adapted at home.

Sarolaner dosing is product-specific, species-specific, and weight-based. For Simparica in dogs, the labeled minimum dose is 2 mg/kg by mouth once every 30 days, using one of the manufacturer’s chewable tablet sizes. The product is labeled for dogs 6 months and older and 2.8 pounds or greater. Simparica Trio is also given monthly, but the exact sarolaner amount depends on the combination tablet strength your vet prescribes.

For cats, sarolaner is used as part of Revolution Plus, a topical medication applied once monthly. The labeled minimum sarolaner dose in that product is 1 mg/kg, paired with selamectin. It is labeled for cats and kittens 8 weeks and older and 2.8 pounds or greater.

There is no established published dose for scorpions in standard veterinary references. That means pet parents should not estimate a dose by body weight, split a dog chew, dilute a topical product, or borrow medication from another pet. With exotic pets, even a very small dosing error can be serious.

If your vet does prescribe a sarolaner-containing product for a dog or cat in your household, ask exactly which product, which strength, how often to give it, and what to do if a dose is late or vomited up. If your pet has a history of seizures, tremors, or other neurologic disease, bring that up before starting any isoxazoline medication.

Many dogs tolerate sarolaner well, but side effects can happen. The more common reported effects include vomiting, diarrhea, decreased appetite, and lethargy or sleepiness. Mild stomach upset may pass, but ongoing vomiting, bloody diarrhea, marked weakness, or refusal to eat should prompt a call to your vet.

The most important safety warning with sarolaner and other isoxazolines is the potential for neurologic adverse effects. Reported signs include muscle tremors, shaking, ataxia, trouble walking, weakness, and seizures. These reactions are considered uncommon, but they can occur in pets with or without a prior seizure history.

For cats receiving a sarolaner-containing product such as Revolution Plus, similar neurologic warnings apply. Skin irritation at the application site can also occur with topical products. If your cat drools after grooming the product before it dries, that can happen from the taste and should still be reported if it is persistent.

See your vet immediately if your pet develops collapse, repeated vomiting, severe tremors, trouble standing, or a seizure after receiving a sarolaner-containing medication. If the medication was given to the wrong species, the wrong pet, or in the wrong amount, contact your vet right away.

No long list of routine drug interactions is highlighted in common client references for sarolaner, but that does not mean interactions are impossible. The biggest practical concern is using sarolaner in pets that are also receiving other medications that may affect the nervous system, or in pets with a history of seizures or neurologic disease.

Combination products matter here. Simparica Trio includes moxidectin and pyrantel in addition to sarolaner, and Revolution Plus includes selamectin with sarolaner. That means your vet needs a full list of everything your pet receives, including heartworm prevention, flea and tick products, dewormers, supplements, and any recent topical treatments. Doubling up on parasite products by accident is a common safety problem.

If your dog or cat is on another flea, tick, or mite medication, ask your vet whether the products overlap. This is especially important in multi-pet homes where dog and cat preventives may look similar but contain different ingredients and concentrations.

For a scorpion, the safest answer is straightforward: because sarolaner is not a standard medication for this species, interaction data are not established. Your vet should review the full husbandry setup, recent treatments, substrate changes, feeders, and any environmental sprays before recommending any medication.