Fastum Gel is a topical pain relief medication containing ketoprofen 2.5% as its active ingredient. It is used to treat local pain and inflammation associated with muscle strains, sprains, and joint conditions. This is a prescription medication that comes in a 100g tube format. The gel formulation allows for easy application and absorption through the skin to target pain and inflammation at the source. As with any medication, it should be used as directed by a healthcare professional.