Information on GNC in Charleston, SC 29401 Outlet Note Regular Brands GNC South Carolina Charleston 325954 Rating 4.7 based on 97 votes Address 261 Calhoun Street, 0 Charleston, SC 29401 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 - Charleston GNC Outlet - Charleston GNC Outlet - Charleston GNC Outlet - Charleston People Also Viewed