Like Zanne and others, the barium generally moves quickly through me and gives me diarrhea. I also had a stricture when doing this test several times over the years.
When my stricture was recently at its worst, about 1 month before my 7/30 surgery, strangely the barium did NOT give me diarrhea. However, it caused no cramping or blockages. Drinking LOTS of water after you arrive home is probably one of the best things you can do for yourself. And if that doesn't do the trick, using a stool softener usually helps.
If you're still concerned, you might want to ask your doctor about it.