The pain-relieving patches are for external use and include hydrogel cooling types. The hydrogel type consists of a backing layer, a gel layer, and an anti-adhesive layer. Its main components are hydrophilic polymer gel and water. It relieves local pain from sprains, muscle strains, etc., through physical cooling and the penetration of analgesic ingredients. The far-infrared magnetic therapy pain-relieving patch is a Class II medical device, manufactured by Jiangxi Renjutang Pharmaceutical Co., Ltd., and uses far-infrared magnetic therapy technology. The advertisement is valid until March 15, 2028. There is also a compound Zushima pain-relieving patch, which uses a rubber plaster formulation and contains traditional Chinese medicine ingredients such as Zushima, Ezhu, and Sanleng. Its quality is tested using thin-layer chromatography and high-performance liquid chromatography. It is mainly used to treat rheumatic arthralgia and sprains.
This product should be applied to dry skin. Avoid contact with mucous membranes or broken skin. Pregnant women and children should use it under the guidance of a physician.