spitting up constantly!!!

Does anyone else's lo spit up constantly and have u figured out how to stop it... He is my 2nd spitter with the first we did the rice cereal to thicken up the bottle and he still spit so it did was cause him to be constipated all the time.. I swear that kid spit until he was about 2... With my almost 5 month old uve tried different formulas and he's now on Enfamil AR and he's still spitting... I can't even put clothes on him because he spits up and soaks them as soon as I put them on... He's gaining weight and it's not bothering him at all I'm just tired of doing laundry all the time lol!!! Anybody have any success on getting the spit up to stop???