Is there a natural pain reliever that works on back pain and spasms?

See below. I like arnica which comes in gel form. It is very safe, has some antiinflammatory properties and can be used for aches and pain and muscle spasms. It is applied onto the skin over the painful area.
Few of them. Ginger, garlic and ginkgo biloba, cayenne have been used for many years for arthritis nd back pain.