Posted on January 1, 2019 January 1, 2019 by WebsiteYellowPages.com GNC 1 2 3 4 50.000 CategoriesHealth & Diet Foods-Retail LocationsIllinois Bookmark Contact Information Business Name GNC Address 500 W Madison St, Illinois 60661-4544 Fax Number 3124740160 CategoriesHealth & Diet Foods-Retail Post navigationPrevious post: Coldwell BankerNext post: EVENTSHEPHERD INC