Previcox Tablets for Dogs

Previcox Tablets for Dogs
57mg Chewable Tablet » Priced per Tablet
227mg Chewable Tablet » Priced per Tablet

  • 57mg Chewable Tablet » Priced per Tablet £0.43
  • 227mg Chewable Tablet » Priced per Tablet £0.70

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£0.43 to £0.70


Previcox is a medication used to treat inflammation and pain in dogs. The tablet works quickly and is chewable, though can be given with food to make administering the drug much easier. It inhibits the enzyme responsible for generating the chemicals which lead to pain and inflammation. Previcox is generally used to treat the symptoms of osteoarthritis though it may be suitable for other conditions as well. Osteoarthritis can occur through old age and general wear and tear, though the use of a drug such as Previcox can lead to dramatic reductions in the inflammation and pain, so giving the pet a whole new lease of life.

Previcox for dogs is only available with a prescription from your vet. The medication can be purchased directly from the vet but this usually works out to be much more expensive, so an alternative is to buy dog medicine from VioVet. The prescription will have to be obtained from the vet and sent with the order before the drug can be supplied.

As with all pain-relieving drugs, some side effects are possible. Any unusual symptoms should be reported to your vet. However Previcox for dogs is in fact one of the safest drugs in its class and very rarely causes any unwanted side effects. Care should be taken if the animal is suffering from conditions such as liver or kidney problems, heart disease or blood pressure problems. The vet will also take into consideration any other medication being given to the pet.


Tan-brown, round, convex, engraved, scored chewable tablets, each containing 57mg or 227 mg firocoxib.


Firocoxib is a non-steroidal anti-inflammatory drug (NSAID) belonging to the Coxib group, which acts by selective inhibition of cyclooxygenase-2 (COX-2)–mediated prostaglandin synthesis. PREVICOX tablets are for the relief of pain and inflammation associated with osteoarthritis in dogs and for the relief of post-operative pain and inflammation associated with soft-tissue, orthopaedic and dental surgery in dogs.

Dosage and administration


The recommended oral dose is 5 mg per kg bodyweight once daily, as shown in the table below. Tablets can be administered with or without food. Duration of treatment will be dependent on the response observed. As field studies were limited to 90 days, this should be borne in mind when considering longer-term treatment, with regular monitoring carried out by the veterinarian.

Relief of post-operative pain:

The recommended oral dose is 5 mg per kg bodyweight once daily, as shown in the table below, for up to 3 days as needed, starting approximately 2 hours prior to surgery.

Following orthopaedic surgery and depending on the response observed, treatment using the same daily dosing schedule may be continued after the first 3 days, upon judgement of the attending veterinarian.

Body weight (kg)

Number of chewable tablets

mg/kg range



3 - 5.5


5.2 - 9.5

5.6 - 10


5.7 - 10.2

10.1 - 15


5.7 - 8.5

15.1 - 22


5.2 - 7.5

22.1 - 45


5.0 - 10.3

45.1 - 68


5.0 - 7.5

68.1 - 90


5.0 - 6.7

Contra-indications, warnings, etc

For animal treatment only. Do not exceed the recommended dose. Do not use in pregnant or lactating bitches.

Do not use in animals less than 10 weeks of age or less than 3 kg bodyweight. Do not use in animals suffering from gastrointestinal bleeding, blood dyscrasia or haemorrhagic disorders. Where there is a risk of gastrointestinal bleeding, or if the animal previously displayed intolerance to NSAIDs, use this product under strict veterinary monitoring.

Vomiting and diarrhoea have occasionally been reported. These reactions are generally of a transitory nature and are reversible when the treatment is stopped. Rarely, nervous system disorders have been reported in treated dogs.

Do not use concomitantly with corticosteroids or other non-steroidal anti-inflammatory drugs (NSAIDs). Use in very young animals, or animals with suspected or confirmed impairment of renal, cardiac or hepatic function may involve additional risk. If such use cannot be avoided, those dogs require careful veterinary monitoring.

Avoid use in any dehydrated, hypovolaemic or hypotensive animals, as there is a potential risk of increased renal toxicity. Concurrent administration of potentially nephrotoxic drugs should be avoided.

Renal and/or hepatic disorders have been reported in very rare cases in dogs administered the recommended treatment dose. It is possible that a proportion of such cases had sub-clinical renal or hepatic disease prior to the commencement of therapy. Therefore, appropriate laboratory testing to establish baseline renal or hepatic biochemistry parameters is recommended prior to and periodically during administration.

The treatment should be discontinued and the advice of a veterinarian should be sought if any of these signs are observed: repeated diarrhoea, vomiting, faecal occult blood, sudden weight loss, anorexia, lethargy, degradation of renal or hepatic biochemistry parameters. As with other NSAIDs, serious adverse effects can occur and, in very rare cases, may be fatal.

Laboratory studies in rabbits have shown evidence of maternotoxic and foetotoxic effects at dose rates approximating the recommended treatment dose for the dog. Pre-treatment with other anti-inflammatory substances may result in additional or increased adverse effects and accordingly a treatment-free period with such drugs should be observed for at least 24 hours before the commencement of treatment with PREVICOX. The treatment-free period, however, should take into account the pharmacokinetic properties of the products used previously.

PREVICOX must not be administered in conjunction with other NSAIDs or glucocorticosteroids. Gastrointestinal tract ulceration may be exacerbated by corticosteroids in animals given non-steroidal anti-inflammatory drugs.

Concomitant treatment with molecules displaying action on renal flow, e.g. diuretics or Angiotensin Converting Enzyme (ACE) inhibitors, should be subject to clinical monitoring. Concurrent administration of potentially nephrotoxic drugs should be avoided, as there might be an increased risk of renal toxicity. As anaesthetic drugs may affect renal perfusion, the use of parenteral fluid therapy during surgery should be considered to decrease potential renal complications when using NSAIDs peri-operatively.

Concurrent use of other active substances that have a high degree of protein binding may compete with firocoxib for binding and thus lead to toxic effects.

In the event of accidental ingestion, seek medical advice immediately and show the package leaflet or label to the physician. Wash hands after use of the product.

Return halved tablets to the blister and keep out of the reach of children.

Disposal advice

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

Pharmaceutical precautions

Do not store above 300C. Store in the original package. Halved tablets may be kept for up to 7 days in the original container.

Legal category


Packaging Quantities

PREVICOX tablets are supplied in carton boxes containing blisters (transparent PVC /aluminium foil and paper backing).

The chewable tablets are available in the following pack sizes:

57mg: 1 carton box containing three blisters of 10 tablets

227 mg: 1 carton box containing three blisters of 10 tablets

Further information

Firocoxib is approximately 96% bound to plasma proteins. Following multiple oral administrations, the steady state is reached by the third daily dose.

Firocoxib is metabolised predominantly by dealkylation and glucuronidation in the liver. Elimination is principally in the bile and gastrointestinal tract.

PREVICOX chewable tablets are scored to facilitate accurate dosing and contain caramel and smoke flavours to facilitate administration to dogs.

Mode of action: Firocoxib is a non-steroidal anti-inflammatory drug (NSAID) that acts by selective inhibition of cyclooxygenase-2 (COX-2)–mediated prostaglandin synthesis. COX-2 is the isoform of the enzyme that has been postulated to be primarily responsible for the synthesis of prostanoid mediators of pain, inflammation, and fever. In in-vitro canine whole blood assays, firocoxib exhibited approximately 380-fold selectivity for COX-2 over COX-1.

Marketing authorisation number


Need help or advice? Contact us:

  • Landline: 01582 842096
  • Mon - Fri: 8:30am - 5:00pm
  • Sat: 9:00am - 1:00pm
  • Email: [email protected]

All prices include VAT where applicable.

Delivery Information

How quickly do you deliver?

Under almost all products on our website is an Estimated dispatch time, check this for a delivery prediction specific to the item you are looking to purchase. These badges are updated live based on the stock levels we have and also those of our suppliers - so are usually very accurate, but cannot be guaranteed. In more general terms, we aim to dispatch all orders within 1 working day of receiving payment (and a prescription if required). If we cannot do so within 3 working days we will contact you by email.

What do you charge for delivery?

For UK delivery, we charge the following:

Order Total Weight Delivery
£0-£28.99 Under 2kg £2.99
2kg+ £4.99
£29-£38.99 Under 2kg Free
2kg+ £4.99
£39+ Under 2kg Free
2kg+ Free

Prices quoted are for delivery to all parts of mainland UK except certain Scottish postcodes (where the price is higher for items sent by courier. Delivery of food abroad (including Channel Islands, N. Ireland and other islands around the UK) is charged at a higher price and free delivery is not available. Temperature controlled products, such as Insulin, are also not always subject to the standard and/or free delivery options.

For full information on our delivery charges, including prices on heavy deliveries to Scotland and abroad, see our delivery information page.

We can deliver most items to all around the world, but prices do vary. The majority of light weight orders (less than 1.5kg) can be delivered for a flat rate of £10. For an accurate estimate of the delivery charge, please put the items you require in your basket and use the "Estimate Delivery" system on the shopping basket page (you only need to enter your country and postal/zip code) for a quick quote. For deliveries to the USA you may need to go to the checkout page and enter your full address to get a quote (as some services need your state in order to quote too). For more information on international deliveries, please see our delivery information page.

Delivery of aerosols

Due to air freight restrictions aerosols cannot ever be sent abroad by Royal Mail. We appreciate your understanding.

Delivery of temperature controlled items

Some products, such as insulin and frozen food, need to be delivered in insulated packaging to prevent them from getting too warm (or too cold) during transit from us to you. Purchasing any of these items in your order will result in a £1.99 charge being added to the total to cover the high cost of the insulated packaging materials. You only pay the £1.99 once per order, regardless of how many temperature controlled items you purchase in that order.

How do I cancel or return an order?

Please call us as soon as possible if you need to amend or cancel an order on 01582 842096. If your order has been processed for dispatch we will be unable to cancel or amend the order. You will however be able to return your product for a full refund*.

To return an item, you must contact us by phone or email to arrange this BEFORE posting any product back to us. We will explain the process at this stage for you.

*For full details on returns, see our terms and conditions page.

Reviews (173)

Q & A

Below are some recent questions we've received regarding Previcox Tablets for Dogs, including answers from our team.

11 October 2017 at 3:17pm



Is previcox safe for my 7 year old cavilier king Charles do you think? She has a disc problem that's a year later is causing her to have a lot of pain. She's on 300mg gabapentin and 5 mg prednicare per day. Almost died after vet prescribed her tramadol. Any suggestions please, I would be truly grateful

  • Veterinary Advisor

Generally it is not considered a good idea to have dogs on NSAIDs like Previcox alongside steroid. However if your dog is in a considerable amount of pain you could talk to your vet about whether it is worth the risk in this case.

9 October 2017 at 10:32am

Side Effects

Alison King

  • VioVet Customer Since: August 2017
  • From: Northamptonshire, United Kingdom

Can you tell me if there are any side effects from taking Previcox?


  • Veterinary Advisor

Like all the non-steroidal anti-inflammatory drugs Previcox can occasionally cause side effects such as vomiting, inappetance, diarrhoea or some liver problems when given long term. However your vet will do a risk-beneift assessment for your dog- usually the benefits outweigh the risks.

6 October 2015 at 9:31pm



Do I have to get prescription even though dog is already on them?

  • Non-Executive Director

Legally we cannot sell any of this without receiving a copy of a prescription signed by your vet. If your vet is helpful, he/she can write out a prescription to authorise medication for 6 to 12 months, though lots of vets decline to do this. It is up to them in fact, we cannot change that.

16 December 2013 at 10:13am

Alternative to Previcox

Adrian Mills

Since ordering food from yourselves and receiving a speedy service I also see you can provide prescribed drugs and I have a question.
My 10 year old JRT has been on previcox for 3 years following a trauma injury for her crutiate ligament.
She has been quite well in general and I wonder if you have a similar non prescription drug that would be just as effective?
Your advice would be appreciated.

  • Website Content Developer

There is nothing like Previcox which is non-prescription. There are however quite a few joint supplements which help the general health of joints and can reduce or sometime eliminate the need for prescription anti-inflammatory drugs like Previcox. I would suggest trying Yumove or Seraquin and gradually trying to wean your dog off the Previcox after a few weeks. If you can reduce the dose, or even stop it altogether, that is great. You might need to use Previcox periodically if there is a flare-up of stiffness or soreness in the leg. Most people find that both types of treatment have their place, along with sensible but controlled exercise and weight control through sensible diet.