Metacam is a brand-name pain and anti-inflammatory medication for dogs. Its active ingredient is meloxicam, a nonsteroidal anti-inflammatory drug (NSAID) that works by blocking the enzymes responsible for producing inflammation and pain signals in the body. It’s FDA-approved for controlling pain and inflammation associated with osteoarthritis in dogs, and veterinarians also prescribe it for post-surgical pain and other acute inflammatory conditions.
How Metacam Works
Metacam belongs to the same broad class of drugs as ibuprofen or aspirin in human medicine, but it’s specifically formulated for dogs. NSAIDs work by inhibiting cyclooxygenase enzymes, which are responsible for producing prostaglandins, the chemicals that trigger pain, swelling, and inflammation at injury or disease sites. By reducing prostaglandin production, Metacam relieves joint pain and stiffness without the metabolic and immune-suppressing side effects that come with steroids.
For dogs with osteoarthritis, this translates to less stiffness in the morning, more willingness to walk or play, and an easier time getting up from lying down. The effects are typically noticeable within a few days of starting treatment.
How It’s Given
Metacam for dogs comes as an oral suspension (a honey-colored liquid) and as an injectable form. Most dog owners will use the oral suspension at home, while the injectable version is typically given at the vet clinic, often as a first dose or after surgery.
The oral suspension comes with a measuring syringe that fits directly onto the bottle. The syringe is marked in pounds and is calibrated to deliver the correct daily maintenance dose (0.05 mg per pound of body weight). When measuring, you should round your dog’s weight down to the nearest 5-pound increment, not up. The syringe cannot accurately measure doses for dogs under 5 pounds.
For dogs over 10 pounds, you can either mix the liquid into food or place it directly into the mouth. For small dogs, the label specifically warns against squirting it into the mouth. Instead, measure the drops carefully onto food to prevent accidental overdosing. Giving Metacam with food is ideal regardless of your dog’s size, since the drug reaches nearly 100% absorption when taken with a meal.
Possible Side Effects
Most dogs tolerate Metacam well, but like all NSAIDs, it can affect the gastrointestinal tract, kidneys, and liver. The most commonly reported side effects are vomiting, diarrhea, loss of appetite, and lethargy. These are usually mild, but they shouldn’t be ignored, especially if they persist or worsen.
Serious side effects are less common but can include gastrointestinal ulcers or perforations, kidney damage, and liver problems. In rare cases, these complications can be fatal. The risk climbs significantly in certain situations: if your dog is dehydrated, has existing kidney, liver, or heart disease, is taking a diuretic, or has recently been on a corticosteroid like prednisone. If your dog has any of these risk factors, your vet needs to know before starting Metacam.
Watch for warning signs while your dog is on the medication. Dark or tarry stools, bloody vomit, a sudden drop in energy, yellowing of the gums or eyes, or a noticeable increase or decrease in water consumption and urination all warrant a prompt call to your vet.
Dogs That Should Not Take Metacam
Dogs with a known hypersensitivity to meloxicam should not receive it. Metacam should also not be combined with other NSAIDs or with corticosteroids, as stacking these drugs dramatically increases the risk of gastrointestinal ulcers and kidney injury. If your dog is switching from a steroid or another NSAID to Metacam, a washout period between the two medications is necessary.
One critical safety note: Metacam oral suspension for dogs must never be given to cats. The FDA label carries a boxed warning, the strongest type of safety alert, stating that repeated meloxicam use in cats has been associated with acute kidney failure and death.
Blood Work and Long-Term Monitoring
Before starting Metacam, your vet will run a blood panel to check liver and kidney function. This baseline screening identifies any pre-existing conditions that could make NSAID use risky. Dogs that pass this initial screen and go on to long-term therapy, as many arthritic dogs do, need periodic rechecks. The typical recommendation is bloodwork every six months to monitor liver enzymes, kidney values, and overall health.
Osteoarthritis is a progressive condition, so many dogs stay on Metacam for months or years. That makes consistent monitoring important. A dog’s kidney or liver function can shift over time, especially as they age, and catching changes early gives your vet the chance to adjust the treatment plan before a problem becomes serious.
What to Expect Day to Day
Metacam is given once daily, at the same time each day, ideally with a meal. Most owners develop a routine of measuring the dose onto their dog’s breakfast. Consistency matters both for steady pain control and for reducing the chance of stomach upset.
If you miss a dose, give it when you remember and resume the regular schedule the next day. Do not double up. If your dog vomits shortly after a dose, do not re-dose without guidance from your vet, since it’s hard to know how much was absorbed. Store the bottle at room temperature, and always use the syringe that came with your specific bottle, since syringes from different Metacam concentrations are not interchangeable.