Information on GNC in Brooklyn, NY 11223 Outlet Note Regular Brands GNC New York Brooklyn 325723 Rating 4.7 based on 97 votes Address 344 Avenue X Brooklyn, NY 11223 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 - Brooklyn GNC Outlet - Brooklyn GNC Outlet - Brooklyn GNC Outlet - Brooklyn People Also Viewed