Here are two most effective methods I have known:

Hot and Cold Therapy
Alternating between hot and cold treatments can provide significant pain relief. Use heating pads or warm baths to relax muscles and joints, and ice packs to reduce swelling and numb the pain.

Acupuncture
Acupuncture involves inserting thin needles into specific body points to relieve pain and improve joint function. This ancient Chinese practice has shown effectiveness in reducing arthritis pain by stimulating the body's natural painkillers.