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Advocate Spot-On for Dogs 55-88 lbs (25-40 kg)
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Choose based on your dog's weight
Description
The Advocate Spot-On for Dogs 55-88 lbs (25-40 kg), manufactured by Elanco, is the largest single-tube variant in the Advocate for Dogs range and is formulated for large-breed dogs between 25 and 40 kg. Each pipette contains imidacloprid at 400 mg and moxidectin at 100 mg, delivering a dose concentration scaled to the body mass of dogs in this bracket. For dogs exceeding 40 kg, the appropriate dose should be achieved by using a combination of pipettes to ensure a minimum dose of 0.1 ml/kg body weight is administered. Dogs in the 25-40 kg range receive one tube monthly, applied to the skin according to the product instructions, providing protection against fleas, heartworm, intestinal nematodes, and ectoparasites without oral administration.
Recommended for
Dogs weighing 55 to 88 lbs (25 to 40 kg), from 7 weeks of age.
Indications / Coverage
For dogs suffering from, or at risk from, mixed parasitic infections:
- Flea treatment and prevention: Eradicates adult fleas (Ctenocephalides) through contact action on the skin and suppresses flea larval development in the surrounding environment, which curtails the progression of Flea Allergy Dermatitis (FAD).
- Flea tapeworm risk reduction: Continuous flea suppression severs the transmission route of Dipylidium caninum, as tapeworm larvae depend on flea ingestion to reach the dog’s intestinal tract.
- Heartworm prevention: Moxidectin intercepts Dirofilaria immitis larvae at the L3 and L4 stages, clearing them from tissue before they can establish in the pulmonary vasculature.
- Oesophageal worm prevention: Halts the establishment of Spirocerca lupi, a nematode that produces granulomatous lesions in the oesophageal wall when left uncontrolled.
- Roundworm treatment and control: Active against larval (L4), immature adult (L5), and adult Toxocara canis and Toxascaris leonina residing in the gastrointestinal tract.
- Hookworm treatment and control: Active against larval (L4), immature adult (L5), and adult stages of Ancylostoma caninum, Ancylostoma braziliense, Ancylostoma ceylanicum, and Uncinaria stenocephala.
- Whipworm treatment: Resolves intestinal infections caused by Trichuris vulpis.
- Generalised demodicosis treatment: Controls proliferation of Demodex canis mites responsible for demodectic skin disease.
- Sarcoptic mange treatment: Eliminates burrowing Sarcoptes scabiei mites from affected skin.
- Ear mite treatment: Clears Otodectes cynotis infestations from the ear canal.
- Lice treatment: Addresses infestations of Trichodectes canis and Linognathus setosus (biting and sucking lice) for up to 6 weeks.
Key Benefits
The pharmacological properties and labeled claims specific to Advocate Spot-On for Dogs 55-88 lbs are outlined below:
- Large-breed dosing precision: The blue tube delivers imidacloprid and moxidectin at concentrations calibrated for dogs between 25 and 40 kg, ensuring that large-breed dogs receive accurate dosing in a single pipette rather than combining smaller variants.
- All-in-one parasite coverage: Fleas, heartworm, five categories of intestinal worms, ear mites, two forms of mange, and lice fall within the spectrum of one monthly application, which consolidates what would otherwise require multiple separate treatments.
- Flea kill without biting: Imidacloprid disperses through the skin’s lipid layer and coat, destroying fleas through nervous system disruption on contact. Large dogs with dense coats benefit from this mechanism because efficacy does not depend on the parasite taking a blood meal.
- 20-minute flea onset: Fleas contacting the treated skin die within 20 minutes, and feeding behaviour stops within 3 to 5 minutes of exposure, which provides rapid population knockdown during heavy infestations common in larger outdoor dogs.
- Consistent 30-day duration: One application sustains protection for a full month across every labeled indication, allowing a single calendar date to govern retreatment for all covered parasites.
- Larval-to-adult worm control: Moxidectin reaches gastrointestinal nematodes at L4 larval, L5 immature adult, and adult stages, and eliminates heartworm larvae at L3 and L4, intercepting parasites at multiple developmental phases in a single dose.
- Topical route for large dogs: Dogs in the 25-40 kg bracket that refuse oral chewables, regurgitate tablets, or have gastrointestinal sensitivities receive equivalent multi-parasite protection through a spot-on formulation that bypasses the digestive system entirely.
- Resilience to water exposure: Swimming, rain, and bathing do not compromise efficacy once the solution has dried at the application site, though soap-free shampoo is required when washing between monthly doses.
Caution
Hazards to Humans
Intended solely for external use on animals. Prevent contact with eyes, skin, and clothing while handling. Wash hands with soap and water without delay after completing application. Ensure children cannot access the product, and keep it separated from all food, beverages, and animal feed.
Hazards to Domestic Animals
Do not administer Advocate for Dogs 55-88 lbs orally. This blue variant is designated for dogs weighing 25 to 40 kg that are at least 7 weeks old. Applying it to dogs outside this bracket delivers an incorrect imidacloprid and moxidectin concentration. Dogs that are sick, debilitated, or underweight require careful assessment before treatment. Advocate’s safety during pregnancy and lactation has not been conclusively determined, making veterinary consultation essential before treating pregnant or nursing dogs. Transient neurological signs, specifically ataxia and muscle tremor, have been documented in very rare cases. If signs persist following application, contact a veterinarian. For dogs exceeding 40 kg, apply two blue tubes with the dose split across multiple sites as directed on the label.
Possible Side Effects
Keep a close watch on your dog for several hours after applying Advocate Spot-On.
Adverse events are infrequent when the blue tube is applied correctly to a dog within the 25-40 kg bracket. The product label records the following:
- Site-specific hair loss: Temporary thinning or loss of hair where the solution was applied has been observed occasionally. Regrowth occurs without intervention and is typically a one-time occurrence.
- Neurological responses: Ataxia and muscle tremor are documented as very rare. When they do occur, these signs are generally transient and self-limiting.
- Localised discomfort: Brief scratching or restlessness at the application site may follow dosing. This behaviour tends to subside once the solution has been absorbed.
If any reaction persists beyond 24 hours or intensifies, discontinue treatment and arrange a veterinary consultation. Elanco can be contacted directly for product-specific safety information.
Direction / How to Apply
Direction
For dogs 25 to 40 kg, apply the entire contents of one blue tube to the skin at a single point between the shoulder blades, at the base of the skull. Part the coat thoroughly to expose bare skin before dispensing the solution, as large-breed dogs with thick or double coats present a higher risk of the product sitting on fur rather than reaching the dermis. Steer the tube away from the dog's eyes and mouth during application. Prevent the dog from being groomed by other household pets while the site remains wet.How to Open
- Extract one tube from the packaging.
- Hold the tube in an upright position and pull the cap straight off.
- Flip the cap over and press it firmly onto the tube tip to pierce through the foil seal.
- Rotate the cap to complete the seal break, then lift it away from the tube.
How to Apply
- Have the dog stand on a stable surface where it can remain still. Large dogs may require a second person to assist with restraint.
- At the base of the skull, between the shoulder blades, push the fur apart until a clear section of skin is exposed. On dogs with dense undercoats, use both hands to separate the hair down to the dermis. Product deposited on fur does not absorb properly and will not deliver the labeled efficacy.
- Position the tube tip against the exposed skin.
- Squeeze the tube firmly to apply the entire solution evenly across 3 to 4 spots along the dog’s dorsal midline, starting between the shoulder blades and moving gradually toward the base of the tail. Dividing the application into smaller spots helps ensure even absorption and prevents the coat from matting or the product from running down the sides of the body.
- Log the application date and schedule the next dose for 30 days later. The product withstands rain, swimming, and bathing between treatments. Wash the dog only with soap-free shampoo to preserve the imidacloprid distributed across the skin and coat.
Storage
- Advocate Spot-On should be stored at temperatures not exceeding 30°C (86°F).
- Position the product where children cannot reach it.
- Verify the expiry date printed on the packaging before each application and discard any tube that has surpassed this date.
- The expiry corresponds to the final day of the month indicated.
- Keep tubes sealed in the original packaging until the moment of use to guard against moisture degradation.
Tips for Using
Dosing and application considerations specific to large-breed dogs in the 25-40 kg bracket:- Direct to Skin: Always part the fur to ensure the medication touches the skin, not just the fur.
- Spot Placement: For dogs in this weight class (25 - 40 kg), the single-spot method may cause the solution to pool and run off. Using 3-4 spots along the spine maximizes skin coverage and absorption.
- No Rubbing: Do not rub the product into the skin. Let it dry naturally on its own.
- Dry Coat Required: Ensure your dog's coat is completely dry before application.
- The 48-Hour Rule: Avoid washing, bathing, or allowing your dog to swim for 48 hours before and after treatment. Doing so strips natural skin oils and significantly decreases the product's effectiveness.
- Monthly Schedule: Apply Advocate Spot-On on the exact same date each month for consistent, continuous protection against fleas, heartworm, and intestinal worms.
| Product Name | Advocate Spot-On for Dogs 55-88 lbs (25-40 kg) |
|---|---|
| Target Weight | 55 – 88 lbs (25 – 40 kg) |
| Packaging Color | Blue |
| Pipette Volume | As labeled per tube for dogs 25-40 kg |
| Active Ingredients | Imidacloprid: 400 mg, Moxidectin: 100 mg |
| Key Excipients | Benzyl alcohol, 1 mg/ml butylhydroxytoluene (E 321; as antioxidant). |
| Application Type | Topical spot-on solution applied directly to the skin |
| Appearance | Clear solution |
| Administration Route | For external use only |
| Pack Sizes Available | 3-pack or 6-pack pipettes |
| Treatment Frequency | Monthly (all indications) |
| Effective Against | – Fleas (Ctenocephalides spp.) |
| Storage | Below 30°C (86°F) |
FAQs
1. My dog weighs exactly 88 lbs (40 kg). Does it still fall within the blue tube range, or do I need two tubes?
A dog at exactly 40 kg sits at the upper boundary of the single-tube range. The label directs that dogs exceeding 40 kg require two blue tubes with the dose divided between the shoulder blades, the midline of the back, and the hips. A dog at precisely 40 kg should receive one blue tube, but if its weight exceeds this mark at any point, two tubes become necessary. Weigh on the day of application to confirm. Advocate for Dogs is also available in three other weight-based variants:
- Advocate Spot-On for Dogs Under 9 lbs (Under 4 kg)
- Advocate Spot-On for Dogs 9-22 lbs (4-10 kg)
- Advocate Spot-On for Dogs 22-55 lbs (10-25kg)
2. My dog weighs over 88 lbs (over 40 kg). How exactly do I apply two blue tubes?
Apply two blue tubes by dividing the total dose across three points along the dorsal midline: between the shoulder blades, at the midline of the back between the hips, and at one point in between. Part the fur to bare skin at each site before dispensing. This split-application method ensures that the larger volume of solution absorbs evenly rather than pooling at a single site, which would reduce transdermal uptake on a dog of this size. Consult a veterinarian to confirm this approach is appropriate for your dog’s specific condition.
3. Is one blue tube sufficient for a dog weighing 25.1 kg, the lowest end of this range?
Yes. The blue tube is formulated to deliver effective concentrations of imidacloprid and moxidectin for dogs across the entire 25-40 kg bracket, including those at 25.1 kg. The dosing accounts for the minimum weight in this variant, so no adjustment or supplementation is required for a dog at the lower boundary.
4. My dog recently crossed from the 10-25 kg range into the 25-40 kg range. When should I make the switch?
Transition to the blue tube at the next scheduled monthly application once the dog’s verified weight exceeds 25 kg. The red tube (10-25 kg) does not supply adequate active ingredient for a dog above that weight. Leftover maroon tubes remain appropriate for another dog in the household within the 10-25 kg range but should not be used on a dog that has outgrown the bracket.
5. I applied Advocate a week late this month. What are the consequences, and how do I get back on track?
Apply the dose immediately and reset the monthly schedule from that date. A one-week delay creates a gap in moxidectin coverage during which heartworm larvae transmitted by mosquitoes can progress without being eliminated. For delays under 60 days, resuming treatment and recalculating the schedule is sufficient. If the gap exceeds two months, a veterinarian should evaluate whether heartworm testing is warranted before restarting.
6. My large dog swims regularly. Does frequent water exposure reduce the effectiveness of Advocate 55-88 lbs?
Advocate retains its labeled efficacy after swimming and rain exposure once the application site has dried fully. However, frequent bathing with detergent-based shampoo between monthly doses strips imidacloprid from the skin surface and diminishes flea protection. Dogs that swim or are bathed regularly should only be washed with soap-free shampoo to preserve the product’s residual activity on the coat.
7. I have a large dog treated with Advocate and a small dog in the household. Can the smaller dog be harmed by contact?
The primary risk is cross-grooming while the application site is still wet. If the smaller dog licks the treated area before the solution dries, it ingests a concentration formulated for a 25-40 kg dog, which exceeds the appropriate dose for its weight. Separate the dogs until the site is dry to the touch. Once absorbed, the product poses no documented contact risk to other dogs in the household.
8. My dog is 38 kg and active, but his weight drops to 24 kg during illness. What tube should I use during recovery?
A dog that has dropped below 25 kg falls outside the blue tube bracket and should receive the maroon tube (Advocate for Dogs 10-25 kg) until its weight recovers above 25 kg. Additionally, sick or debilitated dogs require veterinary assessment before treatment with Advocate, regardless of which weight variant applies. Do not use the blue tube on a dog below 25 kg under any circumstances.
9. How soon after application can I expect flea kill on a large dog with a heavy coat?
Imidacloprid begins destroying fleas within 20 minutes of contact with treated skin, and flea feeding stops within 3 to 5 minutes of exposure. On dogs with thick or dense coats, ensuring the solution reaches bare skin rather than sitting on the outer fur is essential to achieving this onset time. If the solution is deposited on fur, absorption is delayed and flea contact with the active ingredient is impaired.
10. Can I combine Advocate 55-88 lbs with a tick treatment, given that Advocate does not cover ticks?
Advocate does not include any tick-active compound. The product label permits concurrent use with a Seresto collar without removing it during application. Any other collar type should be removed before dosing and reattached once the site has dried. Before layering Advocate with an additional systemic tick treatment, consult a veterinarian to assess the combined drug load, particularly for large dogs that may already be receiving other medications.
13 reviews for Advocate Spot-On for Dogs 55-88 lbs (25-40 kg)
| 5 star | 69% | |
| 4 star | 30% | |
| 3 star | 0% | |
| 2 star | 0% | |
| 1 star | 0% |
1-5 of 13 reviews
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Advocate is easy to apply and very effective.
Applying this spot-on treatment monthly has ensured my dog remains protected from heartworm disease.
Since starting this spot-on medication, my dog hasn’t had a single issue with fleas or worms. It’s easy to apply and very effective.
Advocate has been fantastic for my dog’s health.
We’re very happy with Advocate.