You can give aspirin but do NOT give ibuprophen(advil) as it can be liver toxic. Check with the vet as to the correct dosage. My 45 pounder took 1/2 tab a day before going on to need stronger meds from the vet. Also, check into this site with a question from me about arthritis meds and a lot of people gave some very good info about treatment. Maybe in April or around there. Best wishes.
My dog has arthrits and without her meds she cant even walk cause shes in so much pain. just ask your vet