Librium 10 Tablet is not known to cause weight gain. It is advised to consult your doctor if you notice an increase in weight during treatment with this medicine. Librium 10 Tablet contains Chlordiazepoxide, used to treat anxiety disorders. Additionally, it is used for the short-term relief of muscle spasms, symptoms of alcohol withdrawal, anxiety-causing insomnia or distress, and anxiety occurring with mental health problems.