Schwalbe, Bontrager and Conti all make tubes with presta valves with removable cores so you can add sealant to the tube. Schwalbe tubes also use a highly refined rubber that holds tire pressure longer. Michlin makes self sealing tubes that are excellent too.
All of these cost more than regular tubes and none of them will protect against pinch flats caused by insufficient tire pressure so keep the pressure up! Its a good idea to check the pressure AT LEAST every week and the more often the better.