Hi!
I've been taking the generic brand of Librax for just over a month now and am just starting to see a difference. I suffer from IBS/D (for about 10 years now and it was getting progressively worse).
As I understand it, Librax contains a sedative (libruim) and an antispasmodic. I had started having mini panic attacks when I had to leave the house recently and thought that the sedative part would help with the pounding heart, sweating, and running back to the bathroom. It hasn't..

I honestly do not feel any effect of a sedative while taking this med. It doesn't make me sleepy or dopey or unsteady ... or relaxed.
However, it has made my stools more solid. So much so that I had what I called a victory yesterday. Was out shopping and felt that urge. Instead of having to quickly find some dirty icky bathroom, I was able to get in my car and drive 20 minutes home, and walk calmly into my house....without an accident! Believe me, I did a happy dance!
The only annoying side effect of this drug is extreme dry mouth. I wake up with a wicked sore throat most mornings (which goes away after I drink something) and stinky breath.
I'll keep you posted on whether I keep improving. My fingers and toes are crossed!