Medications and Supplements for Dogs with Arthritis
Nonsteroidal Anti-Inflammatory Drugs
These are anti-inflammatory medications, but they do not repair or heal cartilage. Ideally, they would be used along with supplements and given with food. These do provide rapid relief from pain.
A few NSAIDs have chondroprotective characteristics, which means they protect against the breakdown of cartilage. Others, such as aspirin, actually destroy cartilage in the dosage required for pain relief. This is one reason why aspirin is used less frequently for treating osteoarthritis.
The NSAIDs most often recommended are prescription medications. Newer medications have been developed that offer significant advantages over aspirin and the older NSAIDs. Rimadyl (carprofen) is an excellent drug with a low incidence of gastrointestinal side effects that has proven itself over time. It must be given daily. Rimadyl provides good pain relief and seems to slow the arthritic process. There are no detrimental effects on cartilage. Labrador Retrievers, and possibly a few other breeds, may show a higher predisposition for liver toxicity with Rimadyl. Etogesic (etodolac) is another newer NSAID. It requires only one dose a day. This drug may prove as effective as Rimadyl. These drugs are available through your veterinarian by prescription. Note that many over-the-counter NSAIDs used for pain control in people are dangerous when given to dogs. Do not use any drugs without veterinary approval, and never use more than one NSAID at the same time.
Due to potential serious side effects, dogs on these drugs should have blood work first to assess liver and kidneys. The drugs may prolong bleeding times and interfere with clotting, and have the potential to cause life-threatening liver and kidney problems and gastrointestinal ulcerations. Nausea and vomiting may be the first indication of trouble. Blood work should be rechecked every six months, or sooner if there are problems. These drugs should not be combined or given with steroids.
The most common side effect is GI bleeding. This can be difficult to diagnose and quite extensive before signs become apparent. Misoprostol (Cytotec) is a drug that prevents ulceration and helps heal ulcers caused by NSAIDs. Sulcrafate (Carafate) is another drug that protects against mucosal damage. Your veterinarian may prescribe one of these stomach protectants if your dog is taking an NSAID for chronic arthritis.