Biofreeze Gel Classic Pain Relief is a topical pain reliever recommended by chiropractors and pharmacists, due to its proven safety and efficacy for at-home use. The menthol-based formula is fast acting and cools the skin to provide long lasting relief from sore muscles and joints, sprains, strains, and bruises. This gel presentation is particularly well-suited for larger muscle areas such as the back and legs, which may benefit from a massage-type application.