Pomme,I've been taking Librax for over five years now and it has been literally a life saver for me. However, it won't make your ibs better, it justs masks the symptoms and allows you to function more normally. Click on drugs on the links bar and scroll down to Librax to find more about the drug. Basically I use it for its tranquilizing proporties which relaxes my colon, allows me to expell gas and reduces the constant cramping down to manageable levels. I hope this is useful.slvhat