Furosemide (Frusemide) price comparison UK

Diuretic used to manage fluid retention in heart failure. Active ingredient: furosemide. Below: compare UK vet prices with VMD-approved online pharmacies for your dog's weight.

Dog weight (kg)Your vet's price per month (optional, £)

Typical vet price

£18.00–£35.00/mo

indicative UK range

Cheapest online

£7.73/mo

Pet Drugs Online

Annual saving

£123.24–£327.24

after £21 prescription fee: £102.24–£306.24

Based on a 15 kg dog, recommended strength: 40 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.

Pharmacy	Pack	Pack price	Monthly cost	Buy
Pet Drugs Online VMD approved · Free over £39	100 tablets	£12.88	£7.73 Best value	Buy from Pet Drugs Online
Animed Direct VMD approved · Free over £29, next-day available	100 tablets	£13.58	£8.15	Buy from Animed Direct
VetUK VMD approved · Free over £29	100 tablets	£14.00	£8.40	Buy from VetUK
Hyperdrug VMD approved · Free over £35	100 tablets	£14.84	£8.90	Buy from Hyperdrug
PetMeds (Express Chemist) VMD approved · Free over £40	100 tablets	£15.68	£9.41	Buy from PetMeds (Express Chemist)

What Furosemide (Frusemide) treats

Diuretic used to manage fluid retention in heart failure.

Why it costs more at the vet

Cheap generic with very high vet mark-up.

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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".

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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. We have a short guide with a template email you can send to your practice.

Read the full prescription guide →

Common side effects

Increased thirst and urination

This is not a complete list. Always read the patient information leaflet and speak to your vet about side effects.

Related medications

Heart & chronic

Vetmedin

Congestive heart failure caused by dilated cardiomyopathy (DCM) or mitral valve disease in dogs.

ACE inhibitor used in heart failure and chronic kidney disease in dogs and cats.

Potassium-sparing diuretic used alongside furosemide in heart failure.

Track Furosemide (Frusemide) price drops

We'll email when Furosemide (Frusemide) 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.