Do NOT give ibuprofen to your dog, it is highly toxic to them. If you want to try an over the counter medication to your dog, you can try aspirin, but in low doses. Here's a website with a pretty good break down on what you should and shouldn't give your dog as far as pain killers go.
Even aspirin can cause gastric bleeding. My vet used to recommend it for his arthritic dog patients until one strange case happened. After the first dose, the dog became sick and started vomiting blood, and by the time the owners got him back to the vet the dog died. The aspirin literally ate a hole right through the stomach.
I've used tylenol on my dogs (per vet instructions) in the past for early onset hip dysplasia, but found it not all that effective. I couldn't begin to remember the correct dosage and daily limits though.
As ginger said, if a dog needs a painkiller, he needs a vet first to diagnose the problem and correctly treat it. So far in my experience, Deramax has been the best non-steroidal anti-inflammatory for pain in dogs - particularly for arthritis pain. Rimadyl is a close second and fairly cheap since it's been on the market for years.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.