 Following the merger between Pfizer's and GlaxoSmithKline's consumer healthcare divisions, the brand was sold to Angelini in 2020.Continuous Low-level Heatwrap Therapy (CLHT) has been shown to provide better results than cold therapy in the early treatment and prevention of Delayed Onset Muscle Soreness (DOMS)--muscle soreness that occurs within 1 to 2 days of physical exertion.In a low back pain study conducted at the U.S. Spine & Sport Foundation in San Diego, California in 2006, participants treated with Continuous Low-level Heatwrap Therapy (CLHT) prior to exercise reported less intense pain and less trouble moving after 24 hours than the control group.