I take librax on an as needed basis as well for stomach spasms. I might go months without taking it or take it multiple times a day (or anywhere in between). The first few times I took I felt a bit "loopy" for the first 30 minutes or so after taking it -- similar to what Stef described but not quite as intense. I seemed to have built up a tolerance to it though and no longer get that feeling even if it's been 6+ months since the last time I took it. When I take it now, I tend to get dry mouth (but it could be aggravating my sjorgens rather than a true side effect) but that's it in terms of side effects. When I'm getting spasms, it's the only thing that stops the pain.
34 - Diagnosed with Crohn's in Nov. '05
Current Meds: Apriso, Canasa, Methotrexate, Pamine Forte, Aciphex, Domperidone, Folic Acid, Restasis, Zofran, Zyrtec, Zantac, Align, Calcium, Vitamin D, Centrum, Digestive Enzymes, Thera-tears Omega 3 Supplement
Gluten free since Aug. '03