I use Biofreeze mostly for burning. It has menthol in it, in a vanishing gel base along with Ilex extract. Ilex is the a holly and herb that is brewed as a tea in S.America and used instead of coffee. It is called Yerba Mate there. As a tea that is consumed orally, it has some minerals, some caffeine related actions, and is a potent antioxidant. I do think that the Biofreeze does work in other ways. Most of the menthol containing products here do not have this action. Biofreeze is often given by chiropractors and physical therapists for other rehab type discomforts. I was introduced to it by a PT when I had therapy for my tendon leg injury. I also use it on my hands and knees.