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

Share

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.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the advice you need for your dog — all at an affordable price!

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.


Dogster's Digital Magazine is Back!​

Dogster Magazine Cover June 2026

Vet-approved health & behavior advice

Real dog stories & community features

The Organization Helping Pets Feel Safer, Happier, and ‘Fear Free’ – Heroes of the Pet World

[jump-inks title=”Click to Skip Ahead”] What Is Fear Free All About? Why Awareness Matters A Decade of Growth and Impact What’s Next for...

Why Some Dogs Treat Mealtime Like Playtime – And When to Pay Attention

Most dogs are reliable eaters. Bowl goes down, food disappears. So when a dog starts batting kibble across the kitchen floor, tossing pieces...

Major Win for Dogs: Ontario Becomes the Final Province to Ban Ear Cropping and Debarking

​​Ontario has approved new animal welfare regulations that will prohibit elective ear cropping and devocalization (debarking) procedures in dogs from January 1, 2027....

Dogster’s Weekly Photo Contest Winners: Most Adorable Puppy (June 8, 2026)

Every week our team gets the privilege of sorting through our readers photos to choose what dogs will win this weeks contest! See...

More related

Catalan Sheepdog Dog Breed: Info, Pictures, Facts & Traits

Also known as the Catalonian Sheepdog, the Catalan Sheepdog is an uncommon breed in the US, but if you’ve ever met one, then...

Will a Cane Corso Be Good With My Kids? Everything You Need to Know!

The Cane Corso is also known as the Italian Mastiff and has the reputation of being protective, intelligent, and affectionate. With those qualities,...

10 Best Foods for Pregnant Dogs in 2026 – Reviews & Top Picks

Congratulations, you have a pregnant dog! Now, this is where the hard work really starts, which includes making sure she’s getting the right...

Cheagle (Chihuahua & Beagle Mix): Info, Pictures, Care & More

The Cheagle is an adorable dog with an adorable name. It’s a cross between two equally cute dogs—the Beagle and the Chihuahua. Beagles...

Keep reading

10 Best Dog Food Toppers in 2026: Reviews & Top Picks

Providing nutritious food and treats for your canine is vital for maintaining a healthy lifestyle. High-quality meals were once a niche market, but now, premium brand companies enjoy record sales. Although high-end pet food is typically produced with fewer fillers...

cute corgi dog eating dry dog food

Canidae vs. Blue Buffalo Dog Food: Pros, Cons & What to Choose

Staring at the solid wall of pet food offerings in a store is overwhelming and confusing all at the same time. Maybe you have passed the pet food aisle during a grocery trip and found yourself mesmerized by the sheer...

Dogster_Dog Food Canidae VS Blue Buffalo

Can Dogs Eat Pastrami? Vet-Reviewed Dietary Guidance

As dog owners, we know that we need to be careful when giving our dogs little treats from our plates. Human foods can be risky for dogs because not everything that we enjoy eating is safe for them. If eating...

Can Dogs Eat_Pastrami

Stock Up, Look Sharp, and Save While You Shop at PetSmart

When it comes to caring for our dogs, certain things simply come with the territory, like feeding, exercising, training, and grooming. We don’t expect to be paid for these responsibilities – a happy, healthy dog is its own reward! But...

PetSmart Grooming

Can Dogs Eat Rambutan? Vet-Verified Safety Facts

If your dog is like most, they love to eat. They gobble up their food at every mealtime, go after scraps that fall off the table or counter, and investigate anything that they come across outdoors to see if it...

Can Dogs Eat_rambutan

Purina Bella Dog Food Review 2026: Recalls, Pros & Cons

Disclaimer: Purina Bella dog food was officially discontinued effective January 2023. To find similar products check out our reviews of this years best wet and canned dog foods. Review Summary Purina Bella is a unique brand for small breeds like...

Dogster_Purina Bella Dog Food Review

10 Best Dog Bowls in Canada in 2026 – Reviews & Top Picks

Shopping for a dog bowl is more challenging than it initially seems. First, you need to find the right size for your dog. With an oversized bowl, your tiny pup will practically have to climb in to eat! And a...

dog with a food bowl

10 Best Low-Calorie Dog Foods in 2026 – Reviews & Top Picks

If your dog recently stepped on the scale and the number was a bit high, you know it’s time to make some changes. It’s not uncommon to see a chubby animal hobbling around a park or sidewalk these days. In...

Samoyed eating

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Dogster Email Newsletter