I took the lactulose ready-mixed syrupy liquid for a few months. It was inconvenient, messy and produced large amounts of gas that was embarrassing in public. Inexplicably, my wife was quite intolerant and disgusted by this. The cramps were somewhat debilitating. For convenience, my physician switched me to a powder form that mixed with water or other drink. Portability was much greater, tolerability was better without the thick syrup and flatulence and cramping were significantly reduced. Taste was better. I said, "Where has this been all this time?" I suggest he ask his physician about this version. Comes in one-dose packets ready to dump in any drink.