Fluralaner in Dogs & Cats
Generic: Fluralaner
Fluralaner is a potent, long-acting isoxazoline ectoparasiticide used in dogs and cats to control flea and tick infestations as well as specific mite species.
This medication is intended for dogs and cats.
Overview
Fluralaner is a systemic insecticide and acaricide that belongs to the isoxazoline class, offering a sophisticated approach to pest control in companion animals. Unlike older topical treatments like Imidacloprid, fluralaner is frequently administered orally or via long-acting topical solutions that reach systemic circulation to provide extended protection against a wide range of external parasites. Its extended half-life allows for dosing intervals of up to 12 weeks, significantly improving compliance for pet owners managing chronic infestations or year-round prevention schedules. It is widely considered a highly effective alternative to traditional products like Afoxolaner or Spinosad due to its unique pharmacokinetic profile and sustained efficacy. The medication is primarily utilized for the treatment and prevention of flea infestations and the control of various tick species, including black-legged ticks, American dog ticks, and brown dog ticks. By rapidly killing adult fleas before they can lay eggs, fluralaner plays a crucial role in breaking the flea life cycle, which is essential for managing flea allergy dermatitis. Beyond common pests, it is also labeled for the treatment of Demodex mites, Sarcoptes scabiei, and Otodectes cynotis (ear mites), making it a versatile tool for veterinary dermatologists. Its broad spectrum of activity and high margin of safety have made it a cornerstone in modern veterinary parasiticidal therapy.
What It Treats
- Flea infestations: Eliminates adult fleas and prevents re-infestation for extended periods.
- Tick infestations: Treats and controls Ixodes scapularis, Dermacentor variabilis, and Rhipicephalus sanguineus.
- Demodicosis: Used in the treatment of Demodex canis and other mange mites.
- Sarcoptic mange: Effective in managing Sarcoptes scabiei infections.
- Ear mites: Treats Otodectes cynotis infestations in both cats and dogs.
How It Works
Fluralaner acts as an antagonist at the ligand-gated chloride channels (GABA-receptor and glutamate-receptor) within the parasite's nervous system. By blocking these receptors, it disrupts the transmission of nerve impulses, leading to hyperexcitation, paralysis, and ultimately the death of the parasite. This specific binding site is highly selective for arthropods, which explains why the drug demonstrates high toxicity to fleas and ticks while remaining safe for the mammalian hosts it is administered to. Because fluralaner circulates within the animal's bloodstream and tissues, it reaches the parasite through their ingestion of the animal's blood or tissue fluid, ensuring rapid onset of action. This systemic approach is particularly effective because it does not rely on surface contact, ensuring that the medication remains effective even if the animal is bathed or exposed to water shortly after administration.
Dosage
Fluralaner is dosed based on the patient's exact body weight, and it is imperative to follow your veterinarian's specific instructions for the correct size-specific product. Standard oral chews or topical solutions are typically administered every 12 weeks; however, individual treatment plans may vary based on the severity of the infestation, the parasite burden in the environment, and the presence of underlying skin conditions. Never split doses or administer medication intended for a different species, as this can result in under-dosing or potential toxicity.
Administration
For oral formulations, the chewable tablet should be given with food to enhance absorption and reduce the risk of gastrointestinal upset. If using a topical solution, the liquid must be applied directly to the skin at the base of the skull or between the shoulder blades, ensuring the fur is parted to allow direct contact with the epidermis. Avoid washing the area or allowing the animal to swim immediately after topical application to ensure proper absorption into the sebaceous glands.
Storage
Store fluralaner products in their original packaging at controlled room temperature, typically between 15°C and 30°C (59°F to 86°F). Keep the product away from direct sunlight, moisture, and extreme temperature fluctuations to maintain the stability of the active ingredient. Ensure the medication is kept in a secure location out of reach of children and other pets, as accidental ingestion of multiple doses can lead to adverse clinical signs.
Contraindications
Fluralaner should be used with extreme caution in animals with a history of neurological disorders, including epilepsy, ataxia, or muscle tremors, as the isoxazoline class has been associated with potential adverse neurological events in susceptible individuals. There are no definitive breed-based contraindications, but veterinarians exercise heightened surveillance when treating geriatric or medically compromised patients. It is also contraindicated in animals with known hypersensitivity to the active ingredient or inactive excipients present in the formulation. Prior to initiation, a complete physical examination is recommended to ensure the patient is a suitable candidate for long-acting systemic parasiticides.
Interactions
There are currently no significant drug-drug interactions reported for fluralaner when used concurrently with common medications such as heartworm preventatives, anthelmintics, antibiotics, or vaccines. However, because it is highly bound to plasma proteins, it is prudent to inform your veterinarian of all supplements and medications your pet is currently receiving. Caution is advised when considering concurrent use with other potent neurotoxic agents or medications that may affect hepatic metabolism, although these instances are rarely seen in clinical practice.
Side Effects
- Decreased appetite
- Diarrhea
- Vomiting
- Lethargy
- Polydipsia (increased thirst)
- Muscle tremors (rare, observed in high doses)
- Ataxia (incoordination, rare)
- Seizures (extremely rare, primarily in animals with pre-existing neurological conditions)
Sources & References
Frequently Asked Questions
This information is educational only and not a substitute for professional veterinary advice. Always consult a licensed veterinarian before starting or changing any medication.
