IBS-D patients find occasional use of anti-diarrheal products such as Imodium® to be helpful in adjusting stool consistency and work by binding with the water in your intestines and regulating transit time.
IBS-C patients may try bran cereals, ispagula husk, psyllium seed, guar gum and inulin. Before adding these to your diet, consult your doctor and easy these into your diet to see how your system will react. Remember to drink water with them.
IBS-A patients will need to go easy on either solution as it may trigger extremes in bowel reaction. A balanced diet should still be your first line of defense.