Fastum 2.5% Gel – Pain & Inflammation ReliefFastum 2. 5% Topical Gel Ketoprofen for Pain, Swelling & Muscle Relief Fastum 2. 5% Topical Gel contains Ketoprofen, a non steroidal anti inflammatory drug (NSAID) that helps relieve pain, inflammation, and swelling. It works by blocking the enzymes responsible for prostaglandin synthesis the natural chemicals that cause pain and inflammation in the body. When applied directly to the affected area, Fastum Gel penetrates deeply through the skin,