The Overuse of Previcox / Equioxx in Horses
(And Why “Better Than Bute” Is NOT the Safety Standard We Should Be Using)
- KC Equine Wellness
Previcox and Equioxx are both forms of firocoxib, a COX‑2 selective NSAID used for pain and inflammation. Equioxx is the equine‑approved version; Previcox was the canine version that used to be used off‑label.
These drugs are often described as “safer than bute.”
But here’s the truth: bute is well‑known to cause significant gastric and hindgut ulceration when used long‑term , so being “better than bute” is not exactly a meaningful measure of safety.
And here’s the part most owners never hear:
The FDA Approved Equioxx label clearly states: NOT for use beyond 14 days.
Yet I routinely see horses on it for months… even years.
NSAIDs are not preventative.
They do not fix the problem.
And long‑term use comes with real, well‑documented consequences.
In both human and veterinary medicine, chronic NSAID use is associated with:
• gastric ulcers
• colitis
• kidney stress or damage
• reduced blood flow to the digestive tract
• compromised gut lining
• systemic inflammation over time
So while owners are trying to reduce mild to moderate musculoskeletal discomfort, they’re often doing it at the cost of the digestive system, which ultimately drives more inflammation long‑term.
This is why I always ask:
At the cost of what?
Because masking pain without understanding the root cause doesn’t make the horse healthier. It simply shifts the problem deeper into the body.
And when the gut becomes compromised, inflammation becomes systemic.
So the very drug being used to “reduce inflammation” ends up creating more of it.
I see these drugs used extremely frequently in my practice, often without owners being informed of the long‑term risks. And it’s not their fault — they’re doing what they were told would help.
But NSAIDs are not harmless.
They are not a long‑term solution.
And they absolutely are not preventative.
If your horse has been on Previcox or Equioxx long‑term and you’re unsure why, or you want to explore safer, root‑cause‑focused options, send me a message. I’m here to help you understand what your horse’s body is trying to communicate.