Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Previcox For Dogs: Our Vet Explains the Uses & Side Effects

White pills spilling out of pill bottle on white

Previcox is a medication made for dogs that is a non-steroidal anti-inflammatory drug (NSAID). As a class, NSAIDs are often used to decrease pain and inflammation, and Previcox is specifically marketed for that use in certain circumstances. Because it is a prescription-only medication, your veterinarian will determine when it may be indicated for your dog.

In this article, we will learn more about this medication, including its potential uses and some possible side effects.

Dogster divider_v2_NEW_MAY_24_

What Is Previcox?

The brand name medication Previcox contains the active ingredient firocoxib. Firocoxib is used as an oral chewable tablet for dogs (Previcox) and is also available for horses in an equine form (Equioxx). Recently, in the United States, the Food and Drug Administration approved the first generic form of firocoxib, called Firox.

As previously mentioned, Previcox is a type of NSAID. More specifically, within this class, it is labeled and subcategorized as a COX-2 inhibitor. Normally, within the body, the COX-2 pathway results in a cascade of events that results in pain and inflammation. By inhibiting this pathway response, this medication aims to provide relief from the activation of pain and inflammation.

Previcox is labeled to be given in a few cases. One is to control pain and inflammation seen in dogs with osteoarthritis. The second is to control pain and inflammation after surgeries that deal with the soft tissue (internal organs) or orthopedics (musculoskeletal system). Previcox can also be given up to 2 hours before said surgery so that control of pain and inflammation is already on board.

In addition, a veterinarian may use this medication extra-label or off-label (meaning it is used differently than its originally intended and approved purpose) such as to decrease fever or alleviate inflammation from other causes or medical diseases.

One important consideration regarding Previcox is that a dog must be at least 7 months old to be given the medication. Additionally, because of how the product is made and scored specifically, a dog that weighs less than 12.5 pounds (5.7 kg) can’t accurately be dosed with this medication. Keep in mind that this drug has not been evaluated in pregnant or lactating dogs.

veterinarian checking up on dogue de bordeaux dog
Image By: maxbelchenko, Shutterstock

How Is Previcox Given?

Previcox is a flavored chewable tablet given once daily. Keep in mind that any generic medication may differ and always follow the instructions given by your veterinarian. The specific Previcox dose will be determined by your dog’s doctor and the amount is based on your dog’s overall weight.

This medication should not be given with other NSAIDs or corticosteroids. While some NSAIDs are recommended to be given with food, Previxoc markets that it can be given with or without food.

What Happens If You Miss a Dose?

If you miss a dose, you have two options depending on how long it has been since the missed dose. One option is to give the pill as soon as you remember, and then the subsequent doses would be given at the original recommended intervals from this new start time.

Alternatively, if so much time has passed that it is closer to the next regularly scheduled dose, you may opt to wait until that dose is due and give it normally as the instructions recommend. Even if a dose was missed, do not ever double the dose, or give more than the original prescribed amount in a single setting.

White aspirin pills on blue table
Image By: Irin Fierce, Shutterstock

Potential Side Effects of Previcox?

NSAIDS are more known to affect the gastrointestinal, liver, and kidney systems within the body.

Some side effects to look out for in dog-approved NSAID medications, including Previcox, include:
  • Vomiting
  • Diarrhea
  • Black, tar-like stool
  • Decreased appetite
  • Lethargy
  • Increased water consumption
  • Increased urination
  • Seizure
  • Incoordination
  • Pale, whitish colored gums
  • Yellowing of the skin or whites of eyes (jaundice)
  • Fever
  • Bruising

If any negative signs are noted, the medication should be put on pause while contacting your dog’s veterinarian right away. In addition, if a dog has a hypersensitivity to the main ingredient, firocoxib, they should not be given Previcox to avoid an allergic reaction.

Did you know you can talk to a vet online? Click on the image or button below to schedule a call: PangoVet_Mention-in-Content Savings V1


Dogster divider_v3_NEW_MAY_24_

Frequently Asked Questions (FAQ)

Why is this medication prescription only?

Previcox (as well as other NSAIDs) is a medication where a veterinarian’s education and experience are needed to determine if this medication is best to be used for treatment. In addition, because these medications can have serious side effects, these should be discussed and monitored.

Your veterinarian will perform a complete history and physical exam prior to a dog beginning the medication. It may also be recommended to conduct bloodwork prior to starting the medication and to continue laboratory monitoring thereafter on a long-term basis.

What flavor is the chewable tablet?

It is barbecue flavored; the manufacturer advertises this as highly palatable to dogs.

woman training her papillon dog in the garden
Image Credit: Sand Diana, Shutterstock

This medication is marketed to treat osteoarthritis. What is this?

Osteoarthritis is a non-infectious degenerative disease that affects the joints by causing deterioration of the joint cartilage while also forming new bone. Unfortunately, once it evolves, it will continue to get worse over time. In the end, this results in stiffness, pain, and having joints that do not operate normally. It can affect about 25% of dogs and is the most frequent form of arthritis seen in our canine companions.

It can occur primarily (originating and occurring on its own) in older dogs, but can also be seen secondarily (originating as a result of another condition) in other orthopedic diseases including hip dysplasia, cruciate ligament disease, patellar dislocation, elbow dysplasia, etc.

Dogster divider_v2_NEW_MAY_24_

Conclusion

Previcox is a non-steroidal anti-inflammatory medication that is available via prescription and can be used to help alleviate pain and inflammation in dogs. While it can have side effects to be monitored for, it is a commonly used medication that can, in many instances, help provide comfort for our canine companions.


Featured Image Credit: Tetiana Radachynska, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

  1. My dog started Ficoxil 227 mg and after the first 5 pills he's gotten a sore between his back feet toes that he leaks unstoppably and now there's a wound. Could It be an allergic reaction to the medicine coz he never had this issue before among his toes.
    Any advice would be much appreciated!
    Kind regards
    Eλενη.

    1. Hello there,

      Thank you for your question. Although dogs usually react well to this medicine, some adverse reactions are always possible, so this is something that should be brought to the attention of the prescribing vet. If you would like to discuss this with a different veterinarian, you are welcome to book an appointment with one of our veterinarians from our PangoVet.com telehealth service. Just head to https://www.pangovet.com.

      Best of luck!

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

10 Awesome DIY Dog Christmas Decorations & Ornaments (With Pictures)

The holiday season is here faster than you might think — before you know it, it’s time to start decorating the house! If...

10 Best Vet-Recommended Dog Foods in 2025 (Vet Answer) – Top Picks & Reviews

We spend lots of time considering which foods suit us, but pet parents are also picky about which brands are best for their...

Why Is My Dog Peeing Blood? Possible Reasons & What to Do (Vet Answer)

Noticing blood in your dog’s urine is a scary sight for any dog owner. Some dogs pee blood while appearing otherwise completely well,...

Australian Shepherd Dog Breed: Info, Pictures, Care & More

An Australian Shepherd is one of the most instantly recognizable breeds these days. While they thrived on the farm rounding up sheep at...

More related

Black and Tan Dachshund: Info, Pictures, Origin & History

Black and Tan Dachshunds are quite common. These dogs have the same personality and temperament as other Dachshunds, as the color difference does...

Why Is My Female Dog Peeing on the Bed All of a Sudden? 8 Vet-Reviewed Reasons

It can be confusing and unexpected for your fully housetrained dog to start having accidents in the house. It’s especially unsettling if your...

Should Dogs Eat the Rainbow? Vet-Reviewed Eating Tips for Canines

Dogs are often considered to be carnivores that require a meat-heavy diet. Still, there are some similarities between a dog’s diet and a...

Afghan Hound Dog Breed: Info, Pictures, Care & More

The Afghan Hound, which originates from Afghanistan, is easily recognized for its flowing locks and piercing eyes. It was bred as a hunting...

Keep reading

How Often Should Puppies Eat? Vet-Approved Guide & Scheduling

Raising puppies is not for the faint of heart. It’s a tough gig, not unlike raising a newborn baby, but it is extremely gratifying, rewarding, and a whole lot of fun. One of the most important parts of successfully caring...

puppies eating from bowls together

Can Dogs Eat Raw Chicken? Vet-Verified Dietary Facts & FAQ

Chicken is a common and healthy ingredient in many dog foods, and plenty of pet parents love to feed their dogs plain-cooked chicken. If you’ve been considering feeding plain chicken to your dog, you may have wondered whether you can...

Can Dogs Eat Raw Chicken

9 Best Dog Foods for Nursing Dogs in 2025 – Reviews & Top Picks

Feeding a nursing dog the best food possible is crucial for her health and the long-term well-being of her puppies. Mother dogs require special food designed to meet their nutritional needs while they are nursing. The ideal food is high...

Litter of Small Breed Newborn Puppies Nursing on Their Mom

Can Dogs Eat Pine Cones? Vet-Verified Facts, Risks & What to Do

Dogs are omnivorous animals, which gives us a bit of leeway in terms of extra treats we can feed them in addition to their regular dog formula. However, dogs sometimes take a fancy to weird things like non-edible bits and...

Can Dogs Eat Pine Cones

Can Dogs Eat Applesauce? Vet-Verified Nutrition Facts & FAQ

Treating your dog sometimes takes a little creativity when you’re out of their usual fare. We know apples make for a healthy snack, but what about their more kid-friendly cousins, the jars of applesauce? While not all varieties are suitable,...

Can Dogs Eat Applesauce

Can Dogs Drink Human Breast Milk? Nutrition & Health Facts

Many pet owners consider their dog to be their baby, and there’s nothing wrong with that. However, there are some things that we shouldn’t be sharing with our pets, and breast milk is one of them. In addition to being...

Can Dogs Drink Human Breast Milk

5 Best Fresh Dog Food Delivery Services in Australia: 2025 Reviews & Top Picks

More and more Australians are looking for a great way to feed their pooches without leaving the house. There are a number of fantastic dog food delivery services available in Australia, each with its own unique benefits. These services allow...

dog ordering food for delivery

11 Best Dog Foods for Small Dogs in 2025 – Reviews & Top Picks

Who loves small dogs? We do! Small dogs are getting more recognition in the pet world as fantastic companions for many reasons. Their size makes them better suited for tiny homes and apartments. Also, small dogs usually have a longer...

French bulldog eating from bowl