Whether you have occasional muscles aches, backaches, minor arthritis pain, or other aches and pains, nothing is stronger among OTC pain relievers. It's no wonder millions of people have trusted Advil to safely and effectively relieve their aches and pains for over 30 years. Advil stops pain at the site of inflammation, so you can get relief where you need it. The medicine in Advil is what ER doctors use to treat their own aches and pains. based on a Survey of er doctors, the pain reliever in Advil is Ibuprofen, a non-steroidal anti-inflammatory drug that when taken as directed is a safe and effective pain reliever and fever reducer. Satisfaction Guarantee If for any reason you are not satisfied with any GSK Consumer Healthcare product, GSK Consumer Healthcare will provide you with a reimbursement within 45 days of the date of purchase. Please note that because GSK is unable to control the quality of our products sold by unauthorized sellers, the Guarantee is not available for products purchased from unauthorized sellers due to potential quality issues outside GSK's control. Please contact GSK Consumer Healthcare directly for more information.