Spironolactone price comparison UK
Potassium-sparing diuretic used alongside furosemide in heart failure. Active ingredient: spironolactone. Below: compare UK vet prices with VMD-approved online pharmacies for your dog's weight.
| Pharmacy | Pack | Pack price | Monthly cost | Buy |
|---|---|---|---|---|
Pet Drugs Online VMD approved · Free over £39 | 30 tablets | £12.88 | £38.64 Best value | Buy from Pet Drugs Online |
Animed Direct VMD approved · Free over £29, next-day available | 30 tablets | £13.58 | £40.74 | Buy from Animed Direct |
VetUK VMD approved · Free over £29 | 30 tablets | £14.00 | £42.00 | Buy from VetUK |
Hyperdrug VMD approved · Free over £35 | 30 tablets | £14.84 | £44.52 | Buy from Hyperdrug |
PetMeds (Express Chemist) VMD approved · Free over £40 | 30 tablets | £15.68 | £47.04 | Buy from PetMeds (Express Chemist) |
What Spironolactone treats
Potassium-sparing diuretic used alongside furosemide in heart failure.
Why it costs more at the vet
Same as other chronic generics.
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Email template, prescription steps and refill setup — the full path 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. We have a short guide with a template email you can send to your practice.
Common side effects
- Vomiting (uncommon)
This is not a complete list. Always read the patient information leaflet and speak to your vet about side effects.
Related medications
Track Spironolactone price drops
We'll email when Spironolactone drops in price at any of the pharmacies above.
Pricing data status: indicative. Last verified 2026-05-15. Pharmacies change prices regularly - always confirm before purchase. Not medical advice.