dumping or something more serious?

Just another person chiming in with,  "I don't like sugar alcohols."  I do OK if I have a stick or two of sugar-free gum sweetened with xylitol.  But every time I have tried a protein bar with larger quantities of sugar alcohols, I will get horrible fatigue and sleepiness within 15 minutes.  It is like I am drugged with a sleep medicine.  I have to lie down and nap, and it takes me a few hours to regain my equilibrium.

Thank you all so much.  I was still pretty sick this morning, but finally feeling better.  I do think it was the sugar alcohols.  I will be more careful from now on.  I appreciate the help. You guys rock.

FYI, when I am sick or in pain from eating or drinking something that doesn't agree with me, I go for a brisk walk. It helps!  If nothing else, it takes your mind off your discomfort.