Chlordiazepoxide/clidinium bromide (marketed as Librax) is a fixed-dose combination medication used to treat peptic ulcers, irritable bowel syndrome (IBS), and gastritis.

It helps relieve stomach spasms, abdominal cramps, and anxiety related to gastric disorders.

[3] Librax is a fixed ratio of these two medications and, as such, is not typically prescribed with an accompanying dosage, but rather directions on how many capsules to take per day.

Clidinium bromide is a synthetic quaternary ammonium antimuscarinic,[5] a sub-class of a family of drugs known as anticholinergics.

Stopping the drug suddenly can worsen the condition and cause withdrawal symptoms (anxiousness, sleeplessness, and irritability).