Stronghold for Dogs
No Prescription Required

Keeping your dog protected from harmful parasites is simple and hassle-free. At Anipetshop, you can discover Stronghold for dogs, a reliable topical treatment formulated with Selamectin to help eliminate both internal and external parasites such as fleas, heartworms, and mites. With options available based on your dog’s weight, from very small to large breeds, and suitable for puppies over 6 weeks old, supporting your pet’s health fits easily into your daily routine.

Can You Buy Stronghold Without a Vet Prescription?

Yes. Stronghold can be purchased from Anipetshop without a veterinary prescription. Anipetshop is a licensed online pharmacy that operates in compliance with APVMA regulations in Australia, where selamectin-based treatments are classified as over-the-counter veterinary medicines.

The requirement for a prescription is determined by the regulatory framework of the country in which the pharmacy operates, rather than the buyer’s location. In the United States, the FDA categorizes Stronghold (selamectin) as a prescription-only medication, meaning a valid veterinarian-client-patient relationship (VCPR) is necessary before a licensed veterinarian can authorize its use.

In contrast, Australia’s APVMA follows a different classification system. Under its guidelines, Stronghold does not require a prescription at the point of sale, allowing Anipetshop to legally supply the product to international customers without one.

The Stronghold provided by Anipetshop contains the same active ingredient, concentration, and dosage as the selamectin formulations prescribed in the U.S. market. These products are sourced from licensed manufacturers and are not generic alternatives.

Explore the Topical Liquid Formulation

Stronghold is a monthly topical spot-on solution containing selamectin as the active ingredient. A single application delivers systemic and contact-based protection for 30 days, covering fleas, heartworm larvae, ear mites, biting lice, and sarcoptic mange. Selamectin is absorbed through the skin into the bloodstream and distributed into sebaceous gland secretions, maintaining effective concentrations throughout the month.

The following details apply to all Stronghold pipette formulations:

• Key excipients: Isopropyl alcohol, dipropylene glycol monomethyl ether, and butylated hydroxytoluene (antioxidant). These carriers support dermal absorption and product stability.
• Physical form: Clear, colorless to yellow liquid solution in a single-dose plastic pipette.
• Storage: Store at or below 86°F (30°C) in the original unopened foil packaging, away from children.

Stronghold is available in six weight-based strengths. Pack color identifies the correct tube at a glance:

Take the Correct Dosage

Stronghold dosage is determined by body weight alone. Each tube strength delivers a minimum of 6 mg/kg of selamectin per application, and selecting the wrong tube results in either underdosing or an increased risk of adverse effects.

Weigh your dog before each treatment, particularly if their weight is near the upper limit of a range. The table below maps current body weight to the correct tube strength and pack color:

For dogs over 130 lbs (60 kg), use a combination of pipettes to reach the 6 mg/kg minimum. Consult a veterinarian to confirm the correct pipette combination for your dog’s specific weight.

If your dog’s weight falls at or near the upper limit of a bracket, select the next higher tube strength. For example, a dog weighing 20 lbs sits at the top of the 10.1–20 lb (Brown) range. If the dog has recently gained weight or is close to 20 lbs, the 120 mg Red tube for the 20.1–40 lb range is the appropriate choice to maintain full selamectin coverage. A veterinarian can confirm the correct tube if you are uncertain.

Why Dog Owners Should Choose Stronghold

Stronghold (selamectin) delivers monthly heartworm prevention alongside broad-spectrum coverage against fleas, ear mites, sarcoptic mange, biting lice, and roundworms in a single topical application. The following points outline the clinical and practical basis for selecting Stronghold over other parasite prevention options:

• Near-complete heartworm prevention: Clinical studies show 99.5% to 100% effectiveness in preventing heartworm infection when applied monthly. Selamectin eliminates immature Dirofilaria immitis larvae before they develop into adult worms.

• Six-parasite coverage in one application: A single monthly dose addresses fleas (adults and eggs), heartworm larvae, roundworms, ear mites, sarcoptic mange, and biting lice. No additional product is needed to cover these parasites.

• Same formulation as Revolution: Stronghold is manufactured by Zoetis and contains the same active ingredient and concentration as Revolution. Dogs already established on Revolution can transition to Stronghold without a formulation change.

• Safe for ivermectin-sensitive breeds: Stronghold has been tested in ivermectin-sensitive Collies at doses five times the standard recommendation with no adverse neurological effects. It is a suitable option for MDR1-affected breeds that cannot tolerate avermectin-class drugs.

• Cleared for use in pregnant and lactating dogs: Studies at doses up to three times the labeled recommendation in pregnant and nursing females reported no adverse effects. No withdrawal period from breeding programs is required.

• Approved from 6 weeks of age: Stronghold can be applied to puppies from 6 weeks old, allowing heartworm and flea prevention to begin before the risk window opens in heartworm-endemic regions.

• Waterproof within 2 hours: Selamectin is fully absorbed into the skin within 2 hours of application. Bathing or swimming after this point does not reduce efficacy for the remainder of the 30-day treatment interval.

How Do Pet Owners Review Non-Prescription Stronghold Online?

Pet owners who purchase Stronghold online without a prescription consistently highlight its reliability for monthly flea and heartworm prevention, along with its ease of application and accessibility through AnipetShop without the need for veterinary approval.

Many long-term users appreciate the spot-on format for its stress-free application, especially for dogs that are difficult to medicate orally. Reviews from customers in the US, Canada, and the UK frequently emphasize cost savings and dependable product availability as key advantages. The ability to purchase without a prescription is also widely valued, particularly by experienced owners who are already familiar with their dog’s weight and parasite prevention needs.

Order Stronghold for Dogs Without a Vet Prescription at AnipetShop

Stronghold is available at Anipetshop without a veterinary prescription, supplied as the original manufacturer formulation with no generic substitutes. The following details confirm the sourcing and product standards that apply to every order:

• Original manufacturer formulation: Stronghold supplied through Anipetshop contains the same active ingredient, concentration, and dosage as U.S.-labeled selamectin products. No generics or reformulated substitutes are stocked.
• Sourced from licensed manufacturers: Products are sourced from regulated manufacturers in Australia and Europe, not from secondary distributors.
• English labeling on all packs: All pipettes ship with clear English labeling, including dosing instructions, weight ranges, and storage requirements.
• Shelf life at time of dispatch: Products are dispatched with sufficient remaining shelf life to complete the purchased supply at full potency.

How Stronghold Works on Dogs

Selamectin is absorbed through the skin after application and enters systemic circulation, allowing it to reach both internal parasites via the bloodstream and external parasites via skin contact. It acts by binding to glutamate-gated chloride channels in invertebrate nerve and muscle cells, blocking signal transmission and causing paralysis. Mammals, including dogs, do not express these channels in the central nervous system at the same sites, and the blood-brain barrier prevents selamectin from reaching CNS tissue at therapeutic doses.

After topical application, selamectin reaches peak plasma concentrations within approximately 3 days, during which it eliminates circulating heartworm larvae (Dirofilaria immitis) and intestinal roundworms. The compound is then redistributed into sebaceous glands, from which it is released gradually over the 30-day treatment interval to maintain flea and mite control.

Selamectin also interrupts the flea reproductive cycle. It kills adult fleas on contact, prevents flea eggs from hatching for up to 3 weeks, and reduces larval burden in the immediate environment, lowering the probability of reinfestation between monthly doses.

How Should You Administer Stronghold?

Stronghold must be applied directly to the skin, not the fur. If the solution lands on the coat rather than the skin surface, absorption is reduced and the full 6 mg/kg selamectin dose may not reach systemic circulation.

Before the first dose, a veterinarian should confirm that the dog is heartworm-negative. Applying selamectin to a dog with an active heartworm infection can trigger a reaction as dying larvae release into circulation rapidly.

Step-by-Step Application

1. Preparation: Hold the tube upright and press the cap down firmly until you hear a click, which breaks the inner seal. Remove the cap after the seal is broken.
2. Positioning: Part the fur at the base of the neck between the shoulder blades to expose bare skin. This site is selected because the dog cannot reach it to lick.
3. Application: Place the tube tip directly on the exposed skin and squeeze firmly 3 to 4 times in a single spot until the tube is empty.
4. Completion: Lift the tube while maintaining light pressure before releasing to prevent liquid from being drawn back in. Do not massage the application site. Allow the area to air dry.

The following precautions apply at every application:

• Wet fur: Do not apply to wet or damp fur. Moisture on the coat dilutes the solution before skin contact and delays absorption. The product reaches full water resistance approximately 2 hours after application to dry skin.
• Damaged skin: Do not apply to broken, irritated, or inflamed skin. Compromised skin barrier alters absorption rate and increases local irritation risk.
• Licking: Keep treated dogs separated from other pets until the application site is fully dry. Ingestion of wet selamectin causes hypersalivation due to its bitter taste.
• Underdosing or overdosing: Use the tube matched to the dog’s current weight. Underdosing drops selamectin below the 6 mg/kg therapeutic threshold. Overdosing increases the risk of systemic side effects.

Apply once every 30 days. If a dose is delayed by more than a few days in a dog on heartworm prevention, consult a veterinarian before restarting. A heartworm test may be required to confirm the dog remains infection-free before continuing the prevention schedule.

Are There Any Side Effects of Stronghold to Consider?

Side effects do occur and are organized below by localized and systemic presentation even though Stronghold is well tolerated in most dogs.

Most local effects resolve within 24 to 48 hours without intervention. The following reactions have been reported at the application site:

• Application site alopecia: Temporary hair loss or mild redness at the point of application. This resolves as selamectin disperses from the site into surrounding tissue.
• Pruritus: Localized scratching around the neck shortly after application. This typically subsides within 24 hours.
• White residue: A fine powdery residue may appear on the coat as the solution dries. This does not affect the potency or absorption of the applied dose.

Systemic effects are less common. Contact a veterinarian if any of the following are observed after application:

• Gastrointestinal signs: Vomiting, diarrhea, or reduced appetite following application. These may indicate systemic absorption at a higher rate than expected or ingestion of the product before it dried.
• Lethargy: Weakness, fatigue, or disorientation lasting beyond 24 hours. Persistent lethargy warrants veterinary assessment before the next dose.
• Hypersalivation: Excessive drooling caused by ingestion of selamectin before the application site dried. The compound has a strongly bitter taste that triggers salivation reflexively.

Dogs with a history of seizures or neurological conditions should not receive selamectin without prior veterinary clearance. Tremors and seizures have been reported with macrocyclic lactone compounds, including selamectin, in neurologically compromised animals. These effects are generally reversible when the drug is discontinued, but veterinary assessment is required.

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

1. Several selamectin-based and broad-spectrum alternatives to Stronghold are available through Australian-licensed online pharmacies without a prescription. The options below are grouped by active ingredient to support comparison:

Same active ingredient (selamectin):

• Revolution: Contains the same selamectin formulation as Stronghold and is manufactured by Zoetis. The two products are bioequivalent and interchangeable by weight-matched dose.
• Neovela: A generic selamectin spot-on covering heartworm prevention and flea control. Active ingredient concentration matches the branded formulations.
• Evicto: A selamectin-based spot-on approved for both dogs and cats, covering the same parasite spectrum as Stronghold.

Broad-spectrum alternatives with different active ingredients:

• NexGard Spectra: A monthly oral chewable combining afoxolaner (isoxazoline) and milbemycin oxime, covering heartworm, fleas, ticks, and intestinal worms. Not suitable for dogs with a seizure history without veterinary clearance.
• Advocate: A topical spot-on combining imidacloprid and moxidectin, covering heartworm prevention, fleas, and most intestinal worms. Does not cover ticks.
• Simparica Trio: A monthly oral chewable combining sarolaner (isoxazoline), moxidectin, and pyrantel, covering heartworm, fleas, and ticks. Isoxazoline class; same seizure risk caveat as NexGard Spectra.
• Heartgard Plus: An oral chewable combining ivermectin and pyrantel, covering heartworm and roundworms only. No flea or tick coverage.
• Valuheart: Generic ivermectin tablets for heartworm prevention only. No coverage for fleas, ticks, or intestinal worms beyond the labeled spectrum.

Consult a veterinarian before switching from Stronghold to an isoxazoline-class product if the dog has any history of neurological conditions.

FAQs

Does Stronghold Kill Ticks on Dogs?

No. Standard Stronghold does not cover ticks. The selamectin formulation in standard Stronghold is not active against most tick species. Dogs in tick-endemic areas require a separate tick-specific product or Stronghold Plus, which adds fluralaner to the selamectin base.

Is Stronghold Safe for Pregnant or Nursing Dogs?

Yes. Stronghold is approved for use in breeding, pregnant, and lactating dogs. Studies at doses up to three times the labeled recommendation in pregnant and nursing females reported no adverse effects on the mother or offspring. Treating a lactating mother also reduces flea burden on the litter for up to 7 weeks post-application.

How Quickly Can I Bathe My Dog After Application?

Selamectin reaches full water resistance approximately 2 hours after application to dry skin. Bathing or swimming before that point washes off the solution before skin absorption is complete, reducing the effective dose delivered. Apply only to a completely dry coat to ensure full absorption before the 2-hour window begins.

What Should I Do If I Miss a Monthly Dose?

Apply the missed dose as soon as you notice the gap and resume the regular 30-day schedule from that date. If the gap exceeds 30 days and Stronghold is being used for heartworm prevention, consult a veterinarian before reapplying. A heartworm test may be required to confirm the dog remains infection-free before continuing the prevention schedule.

Can I Use Stronghold on Puppies and Kittens?

Stronghold can be used on puppies from 6 weeks of age. For kittens, the minimum weight threshold varies by tube strength. Some formulations require the kitten to weigh at least 1.25 kg (2.75 lbs) before the smallest tube delivers the correct selamectin dose per kilogram of body weight.

Does Stronghold Treat All Types of Worms?

No. Stronghold treats roundworms but has no activity against tapeworms. Dogs in environments with flea exposure are at elevated tapeworm risk, as fleas are the intermediate host for Dipylidium caninum. A separate tapeworm treatment such as praziquantel (Milpro, Drontal) is required for complete intestinal worm coverage.

My Dog Licked the Application Site. What Should I Do?

Selamectin has a strongly bitter taste. Ingestion of the wet solution before the application site dries causes hypersalivation as a reflexive response, and may cause mild gastrointestinal upset. Both effects typically resolve without intervention once the compound is no longer in contact with oral mucosa. Contact a veterinarian if the dog develops lethargy, stops eating, or shows signs of neurological disturbance.

Why Does My Dog Need a Heartworm Test Before Starting Stronghold?

Stronghold prevents heartworm infection by eliminating Dirofilaria immitis larvae. It does not kill adult heartworms. Applying selamectin to a dog with an existing adult heartworm burden can trigger a systemic reaction as dying larvae release simultaneously into the bloodstream. A negative heartworm test confirms no adult infection is present and the dog is safe to begin the monthly prevention schedule.

Can I Use Stronghold on a Sick or Underweight Dog?

No. Stronghold should not be applied to debilitated, underweight, or clinically unwell animals. These conditions alter pharmacokinetics, and the safety data supporting standard dosing was established in healthy animals. Consult a veterinarian before use if the dog has an active illness or is below normal body condition score.

Is Stronghold Safe for Ivermectin-Sensitive Breeds Such as Collies?

Yes. Selamectin has been tested in ivermectin-sensitive Collies at doses five times the standard recommendation with no adverse neurological effects. Selamectin does not rely on the same transport mechanism as ivermectin at therapeutic doses, making it a suitable option for MDR1-affected breeds where other avermectin-class drugs carry a higher risk.