Common Pet Medications Guide: What Every Pet Owner Should Know

As a pet owner, understanding the medications your veterinarian prescribes is just as important as knowing about your own prescriptions. This guide covers the most common veterinary drugs you are likely to encounter, their uses, and important safety considerations.

NSAIDs are among the most frequently prescribed veterinary medications. They reduce pain, inflammation, and fever. However, veterinary NSAIDs are formulated specifically for animals — never give human NSAIDs to your pets without veterinary guidance.

Meloxicam (Metacam) is the most widely used veterinary NSAID in Europe. It is approved for dogs and cats and comes as an oral suspension with a convenient dosing syringe. For dogs, it treats osteoarthritis pain and post-operative inflammation. For cats, it is typically used short-term for post-surgical pain. Long-term use in cats requires careful veterinary monitoring due to the risk of kidney damage.

Carprofen (Rimadyl) is another popular NSAID primarily used in dogs for osteoarthritis management and post-surgical pain. It is available as chewable tablets, caplets, and injectable formulations. Common side effects include gastrointestinal upset, and liver and kidney function should be monitored during long-term use.

Firocoxib (Previcox) is a COX-2 selective NSAID for dogs, which means it targets inflammation more specifically and may cause fewer gastrointestinal side effects than older NSAIDs. It is used for osteoarthritis and post-operative pain following soft tissue and orthopedic surgery.

Ectoparasite prevention has advanced dramatically in recent years. Modern products offer longer protection periods and broader parasite coverage than older treatments.

Sarolaner (Simparica) is a monthly chewable tablet for dogs that kills fleas and ticks. It starts working within 3 hours for fleas and 8 hours for ticks. Simparica Trio also covers heartworm, roundworms, and hookworms.

Fluralaner (Bravecto) offers extended protection — a single chewable tablet protects dogs for up to 12 weeks against fleas and ticks. For cats, it is available as a spot-on solution. This longer duration improves owner compliance and reduces the chance of protection gaps.

Afoxolaner (NexGard) is another monthly chewable for dogs. NexGard Spectra combines afoxolaner with milbemycin oxime for additional protection against heartworm, roundworms, hookworms, and whipworms.

Veterinary antibiotics are prescribed for bacterial infections. Responsible use is critical to combat antibiotic resistance — a growing concern in both human and veterinary medicine.

Amoxicillin/Clavulanic acid (Synulox/Clavamox) is a broad-spectrum antibiotic commonly prescribed for skin infections, urinary tract infections, and respiratory infections in dogs and cats. It is generally well-tolerated, though gastrointestinal side effects can occur.

Cefovecin (Convenia) is a long-acting injectable antibiotic that provides approximately 14 days of antibiotic coverage from a single injection. This is particularly useful for cats that are difficult to medicate orally. However, its long-acting nature means side effects, if they occur, cannot be quickly resolved by stopping the medication.

Enrofloxacin (Baytril) is a fluoroquinolone antibiotic reserved for more serious infections. In the EU, its use is increasingly restricted to cases where other antibiotics have failed, in line with efforts to preserve critical antibiotics for human medicine.

One of the most exciting developments in veterinary medicine is the introduction of monoclonal antibody therapies for chronic pain.

Bedinvetmab (Librela) is a monthly injection for dogs with osteoarthritis. It targets and neutralizes nerve growth factor (NGF), a key driver of osteoarthritis pain. Clinical trials showed significant improvement in mobility and pain scores. It was the first monoclonal antibody approved for pain in any species.

Frunevetmab (Solensia) is the feline equivalent — a monthly injection for cats with osteoarthritis. Cats are notoriously difficult to medicate, and osteoarthritis in cats is vastly underdiagnosed. Solensia provides a practical solution that does not require daily oral medication.

Pimobendan (Vetmedin) is used for managing congestive heart failure and preclinical myxomatous mitral valve disease (MMVD) in dogs. It works as both a positive inotrope (strengthening heart contractions) and a vasodilator (widening blood vessels). The EPIC trial demonstrated that starting pimobendan before clinical signs appear can delay the onset of heart failure by approximately 15 months.

Benazepril (Fortekor) is an ACE inhibitor used in dogs with heart disease and in cats with chronic kidney disease. It helps reduce blood pressure and protects kidney function.

Praziquantel/Pyrantel (Drontal) is a broad-spectrum dewormer effective against roundworms, hookworms, and tapeworms in dogs and cats. Regular deworming is recommended every 3 months for adult pets, or more frequently in high-risk environments.

Milbemycin oxime/Praziquantel (Milbemax) covers a wider spectrum including lungworm prevention, which is becoming increasingly important as the lungworm Angiostrongylus vasorum spreads to new geographic areas in Europe.

1. Never share medications between species — a drug safe for dogs may be lethal for cats (e.g., permethrin spot-on treatments)

2. Follow dosing instructions precisely — weight-based dosing errors are the most common cause of adverse reactions

3. Complete the full antibiotic course — even if your pet appears better

4. Report side effects to your vet — early detection of adverse reactions is important

5. Store medications properly — keep them out of reach of children and other pets

6. Check for drug interactions — inform your vet about all medications and supplements your pet receives

Veterinary pharmacology continues to advance rapidly, with new treatments improving the quality of life for our companion animals. Stay informed, work closely with your veterinarian, and use resources like PillsCard to understand the medications your pets receive. A well-informed owner is a pet's best advocate.