Etersalate is a topical analgesic and anti-inflammatory agent, primarily used in pharmaceutical products for external application. It is commonly incorporated into creams, gels, and ointments to relieve muscle and joint pain, as well as inflammation from minor injuries, sprains, and strains. Etersalate helps reduce swelling, bruising, and discomfort by penetrating the skin and providing localized relief. It is effective for conditions like arthritis pain, backache, and sports-related injuries. For safety and maximum efficacy, use should follow the guidance of a physician or pharmacist.