We do not recommend that Advil® be used after the expiration date. All of our products are assigned an expiration date, which is based upon extensive stability studies. Advil® is effective until the last day of the month noted on the package. There is no evidence to indicate that the ingredients in the product would be harmful if consumed beyond the expiration date. You may not, however, be receiving the amount of each ingredient listed on the label. The potency of the ingredients slowly diminishes over an extended period of time, and the expiration date is determined by the least stable ingredient in the product. To learn more about disposing of expired medication, check our Safety & Storage page.