6 year old complaining constantly about sore tummy. tried kids pro-biotic and duphalac. but still complaining. what else can i do at home?

Tough question: Tummy pains in kids are common and can be really disarming for the parents in that they are poorly understood and little seems to help. Try heat applications (heating pad). Read about castor oil pack. Those you can do at home besides plain acetaminophen. If he's had it for a while, though, it is important to have it worked up as it may be a sign of a more serious problem.