Stronghold
Spot-on parasiticide covering fleas, ear mites, sarcoptic mange and certain worms. Alternative to Advocate. Active ingredient: selamectin.
See your saving over a year
Pick your dog's weight (and optionally your vet's actual quote) to see the exact monthly and annual saving. The price comparison table below sorts pharmacies by cheapest first; we never sort by commission.
Based on a 15 kg dog, recommended strength: 120 mg pipette. Assumes 12 months of continuous use (chronic dosing) and one written prescription per year. CMA Order caps the prescription fee at £21 for the first medicine, plus £12.50 per additional medicine on the same prescription. Prices are indicative and last verified 2026-05-15. Always confirm the current price on the pharmacy site before purchase.
Why it costs more at the vet
Zoetis-branded selamectin; routine vet dispensing margin.
Common side effects
- Local irritation
Not a complete list. Always read the patient information leaflet and speak to your vet about side effects.
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Copy-paste email template, prescription steps and refill setup. From "I just paid too much at the vet" to "I'm saving £X every month".
How to get a written prescription
The CMA Order is legally binding by 23 September 2026. Every UK vet must offer a written prescription on request, with the fee capped at £21 for the first medicine plus £12.5 per additional medicine on the same prescription. Take the prescription to any VMD-approved online pharmacy listed above.
Common questions
- Stronghold vs Advocate - same thing?
- Different molecule. Stronghold is selamectin; Advocate is imidacloprid + moxidectin. Coverage overlaps; vet picks based on what risks the dog faces.
- Is Stronghold safe for puppies?
- Yes from 6 weeks of age and over 1 kg.
Similar medications
Track Stronghold price drops
We'll email when Stronghold drops in price at any of the pharmacies above.
Stop overpaying for Stronghold.
Same medicine, same regulator, same vet relationship — half the price. Five-minute switch from in-clinic dispensing to a VMD-approved online pharmacy.
Pricing data status: indicative. Last verified 2026-05-15. Pharmacies change prices regularly — always confirm before purchase. Not medical advice.