This gel is a topical anti-inflammatory painkiller that is applied to the skin to ease muscle pains, arthritis, sprains and strains. It contains one of the non-steroidal inflammatory drugs (NSAIDS) such as ibuprofen, piroxicam, ketoprofen, diclofenac or felbinac. As such, it is important not to apply more than the correct amount, in this case, 3cm (11/4 inches).