NexGard Combo for Cats
No Prescription Required

NexGard Combo (esafoxolaner, eprinomectin, and praziquantel) is a monthly topical spot-on solution manufactured by Boehringer Ingelheim, formulated exclusively for cats and kittens 8 weeks of age and older weighing at least 1.8 lbs. Each single-use applicator is applied once monthly to the skin at the base of the skull.

Both sizes are available through Anipetshop and ship to customers in the U.S. without a prescription requirement. The active ingredients, concentrations, and dosing standards in the products dispatched by Anipetshop are identical to those in the prescription-classified version sold in the U.S.

Can You Buy NexGard Combo Without a Vet Prescription?

NexGard Combo is available at Anipetshop without a vet prescription, as Anipetshop operates as a licensed online pharmacy under the Australian Pesticides and Veterinary Medicines Authority (APVMA). Whether a prescription is required hinges on which country’s regulatory framework governs the dispensing pharmacy, not on the formulation of the product itself.

In the U.S., the FDA classifies NexGard Combo as a prescription-only veterinary drug under the Federal Food, Drug, and Cosmetic Act. This requirement stems from esafoxolaner’s classification within the isoxazoline class, which the FDA has linked to neurological adverse reactions, including tremors, ataxia, and seizures in cats with pre-existing neurological conditions.

The APVMA evaluates veterinary medicines independently and applies its own scheduling system, under which NexGard Combo qualifies for over-the-counter supply through registered pharmacies without a prescription. Crucially, this classification does not reflect a lower safety standard: the APVMA-registered product contains the same active ingredients at the same concentrations as the U.S. prescription version.

Purchasing NexGard Combo through Anipetshop is therefore legal under Australian law for personal use. Products are sourced directly from Boehringer Ingelheim and carry the identical esafoxolaner, eprinomectin, and praziquantel formulation to the prescription-classified version dispensed at U.S. veterinary clinics.

Explore the Topical Solution Formulation

NexGard Combo is a monthly topical spot-on solution for cats and kittens 8 weeks of age and older. Following transdermal absorption, the active ingredients distribute systemically to cover fleas, ticks, heartworm larvae, roundworms, hookworms, and tapeworms within a single monthly application. Each applicator is applied to one spot on the neck midline, between the base of the skull and the shoulder blades.

The following details cover formulation, physical characteristics, and storage conditions for reference before purchase:

• Flavoring: NexGard Combo is a topical solution, not an oral product, so palatability and flavoring are not applicable to this format.
• Key Excipients: Inactive ingredients are dimethyl isosorbide, glycerol formal, and butylated hydroxytoluene (BHT), functioning as solvents and a stabilizing antioxidant respectively.
• Physical Form: Clear to pale yellow solution supplied in a single-use plastic pipette with a pull-back plunger mechanism; the solution is non-greasy and dries on the skin after application.
• Storage: Store at or below 86°F (30°C); brief excursions up to 104°F (40°C) are permitted. Keep in the original blister packaging until use, protect from light, and store out of reach of children.

The table below lists available sizes, current pricing, and pack colors to assist with product selection:

Product	Price for 3 Doses	Price for 6 Doses	Pack Color
NexGard Combo For Cats Up to 5.5 lbs (<2.5 kg)	$65.00	$123.00	Purple
NexGard Combo For Cats 5.5–16.5 lbs (2.5–7.5 kg)	$73.50	$137.80	Gold

Take the Correct Dosage

NexGard Combo is dosed strictly by body weight, not by age or breed, using one of two weight-specific applicators applied once per month. Each applicator delivers a minimum of 0.65 mg/lb (1.44 mg/kg) esafoxolaner, 0.22 mg/lb (0.48 mg/kg) eprinomectin, and 4.53 mg/lb (9.98 mg/kg) praziquantel. Selecting the wrong size based on estimated rather than actual body weight risks underdosing across all three active ingredients.

The table below maps body weight to the correct applicator size and active ingredient quantities:

Cat Weight (lb)	Volume (mL)	Esafoxolaner (mg)	Eprinomectin (mg)	Praziquantel (mg)	Pack color
1.8-5.5	0.3	3.6	1.2	24.9	Purple
5.6-16.5	0.9	10.8	3.6	74.7	Yellow

Cats weighing over 16.5 lbs require a combination of applicators to reach the correct minimum dose, with each tube applied to the same location on the neck. A cat at exactly 5.5 lbs falls at the upper limit of the small applicator and should receive the 0.3 mL Purple Box; a cat at 5.6 lbs requires the 0.9 mL Yellow Box, as using the smaller applicator at that weight results in underdosing across all three active ingredients.

Why Cat Owners Choose NexGard Combo

NexGard Combo is currently the only topical treatment for cats that addresses fleas, ticks, heartworm larvae, roundworms, hookworms, and tapeworms within a single monthly application. No other feline topical on the market combines all six parasite categories in one formulation. The following points outline the clinical basis for each coverage area:

• Tapeworm coverage: NexGard Combo is the only feline topical that incorporates praziquantel, making it the sole single-application product capable of treating Dipylidium caninum without a separate oral dewormer. Alternatives such as Revolution Plus and Bravecto Plus do not include tapeworm treatment.
• Heartworm prevention: Manufacturer clinical data show 100% efficacy in preventing Dirofilaria immitis infection when applied once monthly at the labeled dose. Eprinomectin eliminates infective L3 and L4 larvae deposited within the prior 30-day window before they can establish infection.
• Flea and tick coverage: Esafoxolaner kills adult fleas before oviposition and is active against black-legged ticks (Ixodes scapularis) and lone star ticks (Amblyomma americanum). Flea kill before egg-laying interrupts the reproductive cycle and reduces environmental re-infestation.
• Minimum age and weight eligibility: NexGard Combo is labeled for use in kittens from 8 weeks of age and 1.8 lbs body weight. This is among the earliest labeled start ages for a broad-spectrum feline topical, which allows parasite prevention to be initiated at the first kitten visit.
• Applicator design: The twist-and-apply pipette with a pull-back plunger mechanism is designed to deliver the full dose in a single depression to one spot on the neck. Incomplete application, where the plunger is only partially depressed, results in underdosing across all three active ingredients.

How Do Pet Owners Review NexGard Combo Online?

On r/cats, one owner reported six months of consistent use on an indoor/outdoor cat with no flea breakthrough and no need for a separate oral wormer. The observation aligns with the labeled efficacy data: esafoxolaner kills adult fleas before oviposition, and praziquantel eliminates tapeworm without a standalone dewormer dose.

Individual response varies across cats, and any adverse reaction following administration warrants consultation with a veterinarian before the next dose.

Buy NexGard Combo for Cats Without a Vet Prescription at Anipetshop

NexGard Combo is available at Anipetshop without a veterinary prescription under APVMA regulations. The following points describe the sourcing and product standards that apply to all stock dispatched by Anipetshop:

• Authenticity: All products are sourced directly from Boehringer Ingelheim and carry original manufacturer labeling in English, with active ingredient concentrations identical to the prescription-classified version sold in the U.S.
• Sourcing: Stock is drawn from licensed distribution channels across Australia and Europe, not from gray-market or generic suppliers.
• Shelf life: All products dispatched carry sufficient remaining shelf life to ensure active ingredient stability through the full labeled dosing period.
• Equivalence: Each product matches original brand specifications for manufacturer, active ingredients, and dosage standards. No generics or substitutes are stocked.

How NexGard Combo Works on Cats

NexGard Combo delivers three active ingredients transdermally, each targeting a distinct parasite class through a separate neurological or cellular mechanism. After skin absorption, all three compounds distribute systemically and act on parasites during feeding or through direct tissue contact.

• Esafoxolaner (isoxazoline class): Following systemic circulation, esafoxolaner blocks GABA-gated chloride channels in the invertebrate central nervous system when fleas or ticks ingest a blood meal, producing uncontrolled neuronal hyperexcitation, paralysis, and parasite death. This mechanism is selectively toxic to invertebrates because insect GABA receptors differ structurally from mammalian GABA receptors.
• Eprinomectin (macrocyclic lactone class): Eprinomectin binds to glutamate-gated chloride channels in invertebrate nerve and muscle cells, increasing membrane permeability to chloride ions and triggering hyperpolarization, which results in paralysis and death of susceptible nematode larvae, including the L3 and L4 larval stages of Dirofilaria immitis. It does not kill adult heartworms already established in the cat; it eliminates infective larvae deposited within the prior 30-day window before further development can occur, which is why uninterrupted monthly dosing is required.
• Praziquantel (isoquinoline class): Praziquantel causes rapid calcium influx and muscular paralysis in tapeworm tegument, disrupting outer membrane integrity and leading to parasite death. Its precise molecular receptor target has not been fully characterized, but the calcium-dependent paralysis effect is well documented across cestode species.

How Should You Administer NexGard Combo?

NexGard Combo is applied topically once per month to the skin at the base of the skull for cats and kittens 8 weeks of age and older weighing at least 1.8 lbs. Before starting monthly treatment, heartworm testing is recommended by both the American Heartworm Society (AHS) and the AVMA, as eprinomectin does not eliminate established adult infections.

The following steps cover correct application technique; deviating from any step risks incomplete absorption or underdosing:

1. Prepare the applicator: Cut open the blister pack with scissors and remove the pipette.
2. Open the tip: Hold the applicator upright, pull the plunger back slightly, then twist and pull off the cap.
3. Part the fur: Locate the midline of the neck between the base of the skull and the shoulder blades, and separate the fur with your fingers until the skin is visible. Applying to fur rather than skin prevents transdermal absorption.
4. Apply the full dose: Press the tip directly against the skin and depress the plunger completely in one motion. Partial depression results in underdosing across all three active ingredients.
5. Allow the site to dry: Avoid contact with the application site for at least 4 hours. Keep cats separated from other pets until the site is dry, as mutual grooming of the treated area can cause hypersalivation in the cat that ingests the product due to its bitter taste.

Apply only to dry skin. In long-haired cats, part the fur thoroughly to ensure the liquid contacts the skin directly. Wash hands with soap and water immediately after application.

Are There Any Side Effects of NexGard Combo?

NexGard Combo produces adverse reactions in a subset of treated cats, with frequency and severity varying by active ingredient class. The following organizes reported effects by drug class and regulatory classification:

• Esafoxolaner (isoxazoline class): The FDA has issued a class-wide warning associating isoxazoline-class drugs with neurological adverse events, including muscle tremors, ataxia, and seizures. These reactions have been reported in cats both with and without a prior history of neurological conditions.
• Local and gastrointestinal reactions (all active ingredients): The most commonly reported effects across all three active ingredients include vomiting, temporary appetite reduction, and lethargy, which typically resolve within 24 to 48 hours. Application site reactions, including transient alopecia, erythema, and a greasy or clumped appearance at the treated area, have also been reported.
• Hypersalivation from incidental ingestion: If a cat licks the application site before the product dries, or grooms a treated housemate, direct contact with the formulation triggers profuse drooling due to the bitter taste of the excipients. This reaction is not systemic toxicity and typically resolves within one hour, but the application site should remain inaccessible to other cats until fully dry.

Any neurological sign following administration, including ataxia, tremor, or seizure, requires immediate veterinary assessment before the next dose is given.

Are There NexGard Combo Alternatives That Don’t Require a Vet’s Prescription?

Revolution Plus, Bravecto Plus, Stronghold Plus, and Advocate are available at Anipetshop without a prescription under APVMA regulations. The following lists each alternative with its active ingredients, manufacturer, parasite coverage, and minimum age and weight requirements to assist with product selection:

• Revolution Plus: A monthly topical covering heartworm prevention, adult flea kill, four tick species including black-legged and American dog tick, roundworms, hookworms, and ear mites. Approved for cats and kittens 8 weeks and older weighing 2.8 lbs or more.
• Bravecto Plus: A two-month topical covering heartworm prevention, adult flea kill, three tick species including black-legged and American dog tick, roundworms, and hookworms. Approved for cats 6 months and older weighing 2.6 lbs or more. Does not treat tapeworms.
• Stronghold Plus: The international equivalent of Revolution Plus, carrying the same selamectin and sarolaner formulation and the same monthly coverage spectrum across fleas, ticks, heartworm, ear mites, and intestinal nematodes.
• Advocate: A monthly topical covering heartworm prevention, adult flea kill, roundworms, hookworms, ear mites, and lungworm. Provides no tick coverage and no tapeworm treatment. Approved for cats 9 weeks and older.

NexGard Combo is the only feline topical in this group that incorporates praziquantel, making it the sole single-application product that treats Dipylidium caninum without requiring a separate oral dewormer.

FAQs

How long does one dose last?

Each applicator provides full parasite coverage for one calendar month. The 30-day window covers the larval kill cycle for heartworm prevention, which is why doses should not be delayed or skipped.

How fast does NexGard Combo start killing fleas and ticks?

Esafoxolaner kills more than 92% of fleas within 24 hours of application and is effective against ticks within 48 to 72 hours. Flea kill within this window prevents oviposition and reduces environmental re-infestation.

Is it safe for kittens?

NexGard Combo is labeled for kittens from 8 weeks of age and weighing at least 1.8 lbs (0.8 kg). Do not use it in kittens below either threshold, as the labeled minimum dose per kilogram has not been established for animals outside this range.

Does my indoor-only cat need parasite prevention?

Yes. Fleas and ticks can enter the home on clothing, shoes, or other pets, and mosquitoes carrying Dirofilaria immitis larvae move freely indoors. Indoor-only status does not eliminate heartworm, flea, or tick exposure risk.

Where exactly should I apply the solution?

Apply the full contents of the applicator to the skin on the midline of the neck, between the base of the skull and the shoulder blades. Applying to fur rather than skin prevents transdermal absorption and results in an incomplete dose.

What if I miss a dose?

Apply the missed dose as soon as it is identified, then resume the regular monthly schedule from that date. Do not administer two doses within the same dosing period to compensate for the missed application.

Can I bathe my cat after application?

Avoid shampooing the cat for at least 2 days following application. Washing the application site before the product has fully absorbed reduces efficacy across all three active ingredients.

How long should I wait before touching the application site?

Avoid direct contact with the site for at least 4 hours or until it is visibly dry. Keep other pets away from the treated cat during this period to prevent ingestion through mutual grooming.

Can NexGard Combo be used on dogs or other animals?

No. NexGard Combo is formulated exclusively for cats and has not been evaluated for safety or efficacy in dogs or other species. For dogs, NexGard (afoxolaner) and NexGard Spectra (afoxolaner + milbemycin oxime), both manufactured by Boehringer Ingelheim, are the corresponding labeled products.

Can treatment be started at any time of year?

Yes, NexGard Combo can be initiated at any point during the year. For heartworm prevention specifically, the AHS recommends continuing monthly application for at least 3 months after the last known mosquito exposure to ensure all larvae deposited during that final exposure window are eliminated.