| A group of tranquillisers called benzodiazepines including drugs such as Valium, Librium and Diazepam were often involved. |
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| Two of the best known and most widely used benzodiazepines are Librium and Valium. |
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| The discovery of Librium and other minor tranquilizing drugs provided an intriguing new approach to understanding the anxiety neuroses. |
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| Three months after it was approved, Librium had become the most prescribed tranquilizer in the nation. |
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| The popularity of meprobamate paved the way for Librium and Valium, two minor tranquilizers that belonged to a new chemical class of drugs called the benzodiazepines. |
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