I am wanting advice for the best way to treat tendinitis in the wrist?

See details: Try the simple things first. These include warm soaks, buying a wrist splint and using it especially overnight and antiinflammatory meds such as Aleve or Advil. If it persists you may need a more detailed evaluation and a cortisone injection of the tendon. See an orthopedist.

Rest and ice: Best way to treat tendonitis of the wristbis rest , ice and over the counter nonsteroidal anti-inflammatories such as naproxen or ibuprofen. Also try to avoid to avoid the motion that caused the pain in the first plac