Information on GNC in Plymouth, NH 03264 Outlet Note Regular Brands GNC New Hampshire Plymouth 329261 Rating 4.7 based on 97 votes Address 6 South Main Street Plymouth, NH 03264 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 - Bristol GNC Outlet - Gilford GNC Outlet - Laconia GNC Outlet - Lincoln People Also Viewed