Information on GNC in Dayton, OH 45420 Outlet Note Regular Brands GNC Ohio Dayton 326385 Rating 4.7 based on 97 votes Address 1158 Wilmington Avenue Dayton, OH 45420 Phone Hours may vary in different stores. For accurate hours, please contact each store directly. Suite643 Hours may vary in different stores. For accurate hours, please contact each store directly. Nearby GNC Outlet GNC Outlet - Dayton GNC Outlet - Dayton GNC Outlet - Dayton GNC Outlet - Dayton People Also Viewed