Pain Relief Heating Patch This herbal medicine is used widely throughout China for the relief of muscle and joint pain and is a proven method of healthcare. This technology uses infrared heating and traditional moxibustion and is a natural therapy. It works on the principle of heat, mainly by herbs, such as hawthorn, radix cyathulae, cinnamomi cortex, pyrrosiae folium, etc., wrapped by breathable non-woven cloth, suitable for prostate diseases.