Synulox
Broad-spectrum antibiotic for bacterial skin, urinary, respiratory and dental infections in dogs. Combines amoxicillin with clavulanic acid to resist beta-lactamase. Active ingredient: amoxicillin + clavulanate.
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Based on a 15 kg dog, recommended strength: 50 mg. 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 combination, one of the most-dispensed antibiotics in UK practice. The same product is consistently 50% cheaper online.
Common side effects
- Vomiting
- Soft stools
Not a complete list. Always read the patient information leaflet and speak to your vet about side effects.
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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
- Can I open the capsule and mix it with food?
- Synulox is film-coated tablets, not capsules. They can be hidden in food but should not be crushed for fussy dogs without checking with the vet.
- How long is a typical Synulox course?
- Most courses are 7-14 days. Always finish the full course even if signs improve.
Similar medications
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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.