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Frusemide (Furosamide) Tablets for Dogs & Cats

Frusemide (Furosamide) Tablets for Dogs & Cats

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  • 20mg » Priced per Tablet £0.10
  • 40mg » Priced per Tablet £0.10

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Frusemide (also called furosamide) is a diuretic used to clear excess fluid from the body. Frusemide is particularly helpful in cases of mild, moderate or severe heart failure. When the heart is not able to pump blood around the body as effectively as it should, diuretics help to reduce an unhelpful build up of fluid in the body, making the blood circulation more efficient.

Long term use can be associated with low blood levels of potassium. Where this occurs, potassium supplementation is recommended. Overdose will cause dehydration.

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Medication Datasheets

20mg » Priced per Tablet

V DATA SHEETFUROSEMIDE TABLETS B.P. (Vet.) 20mgFUROSEMIDE TABLETS B.P. (Vet.) 40mgTablets containing the stated amount of Furosemide. The tablets are white, circular with bevelled edges and a break-line. The 20mg tablets are flat facedand are embossed ‘F20’. The 40mg tablets are bi-convex and embossed ‘F40’. Both strengths are embossed ‘CP’ on the reverse.Uses:Furosemide tablets B.P. (Vet.) 20mg and 40mg are for use in cats and dogs only. It is a potent ‘loop’ diuretic. So called because it acts primarily by inhibiting electrolyte absorption in the loop of Henlé. It has a rapid onset of action, normally within 1 hour of administration, but a relatively short duration of activity of approximately 4 hours. These characteristics mean that dosing can be timed within the day, to allow consequent passage of water at socially convenient times.Furosemide Tablets B.P. (Vet.) are used in the treatment of oedema. Conditions suitable for treatment include ascites, hydrothorax, pulmonary oedema and oedema of the mammary gland or of the legs, as well as oedema resulting from cardiac insufficiency, hepatic or renal dysfunction, parasitism or of a traumaticorigin. Combined therapy with other medicinal products may be indicated.Dosage:For oral administration only. 5mg per Kilogram bodyweight, one to two times daily.Diuresis occurs within one hour and is normally complete within six hours. Dosing at an interval of at least six hours (and up to ten hours) allows for twice daily dosing, usually without the need for excess urine to be passed during the night. Not to be used in cats or dogs weighing less than 4 kg in bodyweightContra-indications, warnings, etc:Do not use in acute glomerula nephritis, in electrolyte deficiencydiseases, inpatients with anuria, or patients that have received excessive doses of cardiac glycosides.Do not use concurrently with aminoglycoside antibiotics or corticosteroids. Allergic reactions have been associated with use with sulphonamides.For patients weighing less than 8Kg, dosage with the 20mg tablet (which may be halved) is recommended. Whinleys Estate Clarborough Retford Notts DN22 9NATel: 01777 708440 Fax: 01777 860020Rev. 08/06V DATA SHEETFUROSEMIDE TABLETS B.P. (Vet.) 20mgFUROSEMIDE TABLETS B.P. (Vet.) 40mgPatients may increase their water intake to compensate for the diuresis. Consideration should be given to restricting water intake if the animal’s condition permits.Doses higher than that which is recommended may cause transitory deafness.Monitoring of plasma potassium levels is advisable during periods of prolonged treatment of combined therapy with cardiac glycosides. Potassium supplements may be necessary. Furosemide tablets B.P. (Vet.) may be used in pregnant or lactating animals.Wear gloves during, or wash your hands immediately after, handling the tablets.Pharmaceutical precautions:Do not store above 25°C. Protect from light. Keep out of reach of children. Legal category:POM-VPackage quantities:20mg tablets in 500’s.40mg tablets in 1,000’s.Further information:Nil.Marketing authorisation numbers:Furosemide Tablets B.P. (Vet.) 20mg Vm 04409/4001Furosemide Tablets B.P. (Vet.) 40mg Vm 04409/4000

40mg » Priced per Tablet


  1. Name of THE Veterinary Medicinal Product

    Frusemide 40 mg Tablets

  2. Qualitative and Quantitative Composition

    Active substance Qualitative composition Quantitative composition Furosemide (Frusemide) 40 mg per tablet

    Excipients For a full list of excipients, see section 6.1.

  3. Pharmaceutical Form

Tablets. White, circular, biconvex, flat-faced tablets with bevelled edges, with F40 on one side and CP or DP on the reverse, and a breakline.

  1. Clinical Particulars

4.1 Target species

Cats and dogs.

4.2 Indications for use, specifying the target species

For the treatment of oedema associated with cardiac insufficiency, renal dysfunction and trauma in cats and dogs. In animals with pulmonary oedema of cardiac origin, combined therapy with other medicinal products may be indicated.

4.3 Contraindications

Do not use in animals with acute glomerular nephritis, renal failure with anuria, electrolyte deficiency disease or in animals that have received an overdosage of digitalis. Do not use concurrently with aminoglycoside antibiotics. Do not use in animals weighing less than 4 kg.

Special warnings for each target species

There are no special warnings required for either target species.

Special precautions for use

i. Special precautions for use in animals

Do not exceed the recommended dosage. Therapeutic efficacy may be impaired by increased intake of drinking water. Where the animal’s condition permits, water intake should be restricted during treatment with Frusemide 40 mg tablets.

Monitoring of plasma potassium levels is advisable during periods of prolonged treatment of combined therapy with cardiac glycosides. Potassium supplements may be necessary.

ii. Special precautions to be taken by the person administering the veterinary medicinal product to animals

Wear gloves, or wash your hands immediately after handling the tablets.

4.6 Adverse reactions (frequency and seriousness)

Administration at the recommended dosage level is not normally associated with undesirable effects.

4.7 Use during pregnancy, lactation or lay

Frusemide 40 mg tablets are not contraindicated in pregnant or lactating animals.

4.8 Interaction with other medicinal products and other forms of interaction

Concurrent administration with corticosteroids may increase the risk of hypokalaemia. Concurrent administration with aminoglycoside antibiotics may result in ototoxicity. Concurrent administration with cephalosporin antibiotics may result in nephrotoxicity. Concurrent administration with digoxin enhances the cardiac glycoside. Concurrent administration with sulphonamide antibacterials may result in sulphonamide allergy.

4.9 Amounts to be administered and administration route

For oral administration only. Cats and dogs: Dosage up to 5 mg/kg bodyweight, or one tablet, per 8 kg bodyweight, one to two times daily with an interval of 6 - 8 hours between administrations. For animals weighing between 4 and 8 kg, one half of one tablet should be administered. The tablets may be divided by breaking along the score line. For maintenance, the dosage should be reduced to 1 - 2 mg/kg per day. Not to be used in animals under 4 kg bodyweight.

4.10 Overdose (symptoms, emergency procedures, antidotes), if necessary

Transitory deafness may occur in animals administered the product at doses higher than those recommended. Cardiovascular side effects may occur in weak and old animals following overdosage. Excessive doses can lead to hypovolaemia and decompensate renal function. Management of signs of overdosage is symptomatic.

4.11 Withdrawal periods

Not applicable.
  1. Pharmacological Particulars

Pharmacotherapeutic group: Furosemide

ATC Vet Code: QC03CA01

5.1 Pharmacodynamic properties

The tablets contain Furosemide. Furosemide is a potent loop diuretic with a rapid action.

5.2 Pharmacokinetic properties

Furosemide inhibits electrolyte resorption in the proximal and distal renal tubules and in the ascending Loop of Henle. Excretion of sodium, potassium and chloride ions is enhanced, and also water excretion is enhanced. Furosemide has no effect on carbonic anhydrase. Diuretic activity begins one hour after oral administration and continues for four hours. The potency ensures diuretic action even when renal function is poor. Loop diuretics may cause severe potassium loss.

  1. Pharmaceutical Particulars

6.1 List of excipients

Maize starch Pregelatinised starch Magnesium stearate Lactose monohydrate Water, purified

6.2 Incompatibilities

None known.

Shelf life

Shelf life of the veterinary medicinal product as packaged for sale: 4 years. 6.4 Special precautions for storage

Do not store above 25°C. Protect from light.

6.5 Nature and composition of immediate packaging

White polypropylene containers with low density polyethylene, push fit, tamper evident caps, containing 250 or 1000 tablets. Not all pack sizes may be marketed.

6.6 Special precautions for the disposal of unused veterinary medicinal product or waste materials derived from the use of such products, if appropriate

Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.


Dechra Limited Snaygill Industrial Estate Keighley Road Skipton North Yorkshire BD23 2RW United Kingdom


Vm 10434/4059


21 May 2003


September 2016

29 September 2016

Delivery Information

Reviews (38)

Summary of Reviews for Frusemide (Furosamide) Tablets for Dogs & Cats

Overall 5
Ease Of Use
Value For Money
Absence Of Side Effects
38 out of 38 (100%) customers would recommend this product.
5 stars (28 reviews)
4 stars (9 reviews)
3 stars (1 reviews)
2 stars (0 reviews)
1 stars (0 reviews)

Only verified purchasers of this product can leave a review.

55 Really helps my dog
Verified Purchase

By Anita Reed on 25 November 2019

Brilliant makes a real difference

Customer recommends this product

55 Delivered promptly
Verified Purchase

By Duncan Philps-Tate on 5 November 2019

Frusemide is a diuretic. What more can I say about the product?
Viovet were prompt in their handling and delivery. We'll continue to use them for our regular vet meds.

Customer recommends this product

55 Got this for my Yorkshire terrier who has a heart murmur , on the advice of a vet ..
Verified Purchase

By Mike Wake on 26 March 2019

Very good his condition started improving the same day..

Customer recommends this product

55 furosamide tablets
Verified Purchase

By Susan Folan on 22 January 2019

work well for him

Customer recommends this product

45 20mg tablets Frusemide for small dog
Verified Purchase

By Tuck Lei Chan on 2 January 2019

Our mixed Maltese has mitral heart. She needs 1/4 tab of 40mg tab daily. The 20mg tablet is easier to break into required dosage with more precision. The cost of 20mg n 40mg tabs is the same. 40mg is better value but you need agile fingers.

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding Frusemide (Furosamide) Tablets for Dogs & Cats, including answers from our team.

27 November 2014 at 10:09am


Yvonne Whitley-Jones

  • VioVet customer since 2014
  • From: West Sussex, United Kingdom

If I'm ordering more than 1 product which needs a prescription do I need to ask my vet for 2 separate prescriptions or can 2 items go on the one prescription. My vet charges for prescriptions so I would prefer if possible to put 2 products on 1 prescription and pay for the one prescription if the vet is agreeable.

  • Non-Executive Director

Charging for prescriptions is up to your vet. Some vets are very helpful, some are deliberately unhelpful. Your vet is able to put as many drugs onto one prescription as he/she chooses, but some prefer to write out separate prescriptions per drug (one can wonder why!). They can also prescribe as much or as little as they think is reasonable on one prescription. Up to 6 months worth is the usual guideline, but again this is not legally defined and so is down to your vet.

27 November 2014 at 9:58am

Size of Frusemide tablet

Yvonne Whitley-Jones

  • VioVet customer since 2014
  • From: West Sussex, United Kingdom

One of my cats is on a 10mg tablet of Frusemide daily. I have to use a pill cutter to chop in half to give him half in the morning and half in the evening . Firstly do you sell 10mg tablets and secondly is the 20mg tablet large enough to be cut into 4? Thanks.

  • Non-Executive Director

We do not sell 10mg tablets. 20mg frusemide tablets are very small, so quartering would be difficult. Normally for a 5mg dose, I would recommend using a liquid form of frusemide. This can then be measured very easily by syringe and a few drops of the liquid added to food. Frusol is an example, available in 4mg/ml solution, so 1 .25mls would be the dose here.

9 August 2013 at 6:30am


Toni Hipkiss

  • VioVet customer since 2013
  • From: , Australia

Today I have placed an order for FRUSEMIDE. The invoice shows 1 tablet at 03 pence. I need a box of 50 x 40 mg.

Is this item available and if so can my order be changed ?

Thank you.

Toni Hipkiss

  • Professionals Club Manager

Thank you for your question and order. We sell these tablets per tablet as some customers do not want a whole box. We have changed your order to 50 tablets, which will be dispatched as a whole box. I hope this helps answer your question. There is a balance payable for the extra 49 tablets, which we will send you a Paypal request for.