If you have tough pain like headaches, back pain, muscle pain and other body pains, Advil Liqui-Gels relieve pain faster and better than other OTC pain relievers. The medicine in Advil has been trusted by doctors for over 35 years. Advil Liqui-Gels were designed for fast absorption, fast relief and hours of long-lasting pain relief. ER doctors rely on the medicine in Advil for their own aches and pain.† †Based on a survey of ER doctors *The pain reliever in Advil is ibuprofen, a non-steroidal anti-inflammatory drug (NSAID) that when taken as directed is a safe and effective pain reliever and fever reducer.