[anonymous]

“My 11 year-old beagle was diagnosed with arthritis on both shoulder and hip joints”.

@ Mary G

If you have pet health insurance or can afford it, ask your vet about aquatic therapy as a treatment for arthritis. Twenty minutes about 3 times a week can make a BIG difference.
https://www.vetinfo.com/aquatic-therapy-for-dogs.html

Also if your Beagle has extra weight on him, get it off.
Less is more.
Your vet would be the best person to advise you regarding which prescription medications may be beneficial.