Prescribing overview
Simparica contains sarolaner alone; it is neither Simparica Trio nor feline Revolution Plus.
Key prescribing checks
- The U.S. Simparica label specifies dogs at least six months old meeting the label weight minimum; it specifically excludes use in cats.
- Neurological reactions, including tremors, incoordination and seizures, may occur. Review any seizure or neurological history before selection.
- Single-ingredient Simparica does not provide the heartworm prevention and intestinal-worm coverage of Simparica Trio. Verify the exact product when documenting preventive coverage.
- Breeding, pregnant or lactating patient safety must be checked against the complete label.
Uses by species
Approval and evidence apply to the named product, species, route and indication. An extra-label use requires its own prescribing assessment; a human indication is not an animal approval.
Dogs
US FDA-approved SimparicaFlea treatment/prevention, control of six label-listed tick species and prevention of Borrelia burgdorferi infection through vector-tick killing
At least six months old and 2.8 lb; no heartworm-prevention claim for this single-ingredient product.
Use / indication source ↗Pharmacology & pharmacokinetics
Mechanism and clinical role
Isoxazoline insecticide/acaricide activity targets parasite nervous-system chloride channels.
Absorption, distribution, metabolism and elimination
The reviewed Simparica label does not provide a routine canine half-life estimate; values from other sarolaner combinations are not substituted.
SAFETY REFERENCE · PRODUCT & SPECIES SPECIFIC
Contraindications & cautions
Contraindications identify circumstances where the source says a product should not be used. Precautions call for assessment or monitoring. Interactions identify combinations to review. They are distinct categories; this summary does not replace a full interaction check or the current product label.
Simparica
Oral chewable tablet; Dogs
Contraindications · when not to use
- Label reports no known contraindications.
Precautions & monitoring
- Warning: dogs only; not cats or dogs under six months. Use caution with seizure/neurologic history. Breeding, pregnancy and lactation safety untested.
Safety sources checked: . Selected label information; independent veterinary or veterinary-pharmacy review remains pending. A label for dogs, cats, horses or humans does not establish safety for another species.
Adverse effects
Vomiting and diarrhea; class-associated tremors, ataxia and seizures, including without prior seizure history.
These are selected source-reported effects, not incidence estimates or an exhaustive list. Spontaneous postmarketing reports do not by themselves establish frequency or causality.
Dosing & administration
| Species & indication | Labeled regimen | Eligibility & source |
|---|---|---|
| DogsLabel-listed flea/tick indicationsSimparica sarolaner chewables | Minimum 2 mg/kg using the labeled weight-band tablet Oral · Monthly One month per dose; may continue year-round | At least six months and 2.8 lb. Use the current package weight chart; never use in cats. Verify full dosing label ↗ |
Safe use in breeding, pregnant or lactating dogs is unestablished.
Extra-label prescribing and food-animal residue requirements are separate from labeled regimens. FDA extra-label-use guidance ↗
Drug & supplement interactions
This is a selected interaction reference, not an automated or comprehensive combination checker. Reconcile prescription drugs, nonprescription products, supplements and recent treatment changes.
A product-specific interaction summary has not been established here. An empty list must not be interpreted as “no interactions.” Review the full source and a species-appropriate clinical reference.
Monitoring
Review neurologic history; observe ingestion and report new neurologic signs.
Client counseling
Ensure the entire chew is consumed. Treat household animals with their own approved flea products.
This section supports the veterinary team's discharge discussion; it does not replace the product’s Client Information Sheet where one is required.
Storage & handling
Store at or below 30°C; keep securely away from animals to prevent overdose.
Brands, formulations & ingredient identity
Active ingredients
Sarolaner
Simparica contains sarolaner alone. Simparica Trio adds moxidectin and pyrantel and is a separate combination product, not a brand synonym.
Revolution Plus also contains sarolaner but combines it with selamectin in a feline topical formulation. Routes and ingredients differ.
Shared ingredients do not establish interchangeable concentrations, routes, release properties, species labeling or regional availability.
Simparica
- Formulation
- Oral chewable tablet
- Label / product scope
- Dogs
Single active ingredient; the Trio suffix changes the product.
Product label / source ↗References & review status
Clinical reference updated October 16, 2026. Independent veterinary or veterinary-pharmacy review not yet completed. Evidence gaps remain explicitly identified; this page does not claim equivalence to a comprehensive, professionally reviewed veterinary formulary.