POM-V Prescription Required Companion Animal

Furosivet 20 mg Tablets for Dogs and Cats

Active ingredient: Furosemide

Form

Tablet

Species

Cats Dogs

Manufacturer

Millpledge Europe BV

VMD MA No.

61300/3002

What it's used for

For the treatment of oedema and ascites, particularly resulting from cardiac insufficiency, renal dysfunction, or of a traumatic origin.

Full indications, dosage and side effects ↓

View official SPC (PDF)

The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.

Paying less for Furosemide

1

Ask your vet for a written prescription

They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.
2

Fill it at a registered online retailer

The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.

Your prescription rights → VMD register of retailers →

Prescription required

Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.

Clinical information

Furosivet 20 mg Tablets for Dogs and Cats — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.

For the treatment of oedema and ascites, particularly resulting from cardiac
insufficiency, renal dysfunction, or of a traumatic origin.

Oral route
The initial dosage is 5 mg furosemide per kg bodyweight per day, given in a single
dose or in two divided daily doses. This corresponds to 1 tablet per 4 kg bodyweight
per day or ½ tablet per 4 kg bodyweight twice a day. Depending on the severity of
the oedema or ascites or in refractory cases, the initial daily dosage may be doubled.
For maintenance, daily dosage should be adapted to the lowest effective dose by the
veterinarian depending on the clinical response of the dog/cat to the therapy.

Do not use in acute glomerular nephritis.
Do not use in patients that have received excessive doses of cardiac glycosides.
Do not use in combination with other loop diuretics.
Do not use the product in animals suffering from hypovolaemia, hypotension or
dehydration.
Do not use in cases of renal failure with anuria.
Do not use in cases of electrolyte deficiency.
Do not use in cases of known hypersensitivity to furosemide, sulphonamides or any
of the excipients.

Revised: August 2025
AN: 01405/2025Page 2 of 5

Due to the diuretic action of furosemide, there may be haemoconcentration and
impairment of the circulation. In cases of prolonged treatment electrolyte deficiency
(including hypokalaemia, hyponatraemia) and dehydration may occur.

Revised: August 2025
AN: 01405/2025Page 3 of 5

The patient may increase its water intake to compensate for the diuresis.
Consideration should be given to restricting water intake to physiologically normal
amounts, if the patient’s condition makes such a course appropriate.

Special precautions for use in animals
Furosemide should be used with caution in case of pre-existing electrolyte and/or
water imbalance, impaired hepatic function (may precipitate hepatic coma) and
diabetes mellitus. In case of prolonged treatment, hydration status and serum
electrolytes should be monitored frequently. Prolonged dosage may on occasions
justify potassium supplementation, especially if the product is used in conjunction
with cardiac glycosides.
1-2 days before and after commencement of treatment with diuretics and ACE
inhibitors renal function and hydration status should be monitored.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
Furosemide has possible genotoxic properties and there is evidence of
carcinogenicity in mice. Although there is inconclusive evidence relating to these
effects in humans, skin contact with or accidental ingestion of the product should be
avoided. Wear impervious gloves during handling and administration of the product
and wash hands thoroughly afterwards.
For the same reasons, the product is supplied in a container with a child-resistant
closure. The cap of the container must be securely engaged after use. If smaller
quantities are dispensed from the pack, they must be supplied in a container with a
child-resistant closure. If appropriate containers are not available, the product must
be supplied in the original container.
Unused tablets or half tablets should be placed back into the container, the child-
resistant closure replaced, and the product stored safely, out of the sight and reach
of children.
In case of accidental ingestion seek medical attention and show product label and/or
pack insert to the doctor.
People with known hypersensitivity to furosemide should avoid contact with the
veterinary medicinal product.
Do not handle this product if you know you are sensitive to sulphonamides as
hypersensitivity to sulphonamides may lead to hypersensitivity to furosemide.
If you develop symptoms following exposure such as a skin rash, you should seek
medical advice and show the doctor this warning. Swelling of the face, lips or eyes or
difficulty with breathing are more serious symptoms and require urgent medical
attention.

Concurrent use with drugs affecting electrolyte balance (corticosteroids, other
diuretics, amphotericin B, cardiac glycosides) requires careful monitoring.
Furosemide may increase the risk of sulphonamide allergy.
Furosemide may alter insulin requirements in diabetic animals.
Furosemide may reduce the excretion of NSAIDs.
The dose regimen may need to be modified for long term treatment in combination
with ACE inhibitors, depending upon the animal’s response to therapy.
Concomitant use with aminoglycosides or cephalosporins may increase the risk of
nephrotoxicity.

Store in the original container in order to protect from light and moisture. The silica
gel bag should be kept inside the container. Half tablets should be replaced back into
the original container and should be given at the next administration.

Not applicable.
5.

This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.