For alcohol withdrawal the usual starting Librium dosage is 50 – 100 mg every 6 hours up to 300 mg per day. Even with a small tolerance your going to need at least 50-75mg to catch any sort of buzz. If you have a moderate tolerance to benzos its going to be impossible to get sedated with anything less than 150mg. The equivalence chart states that 25mg of Chlordiazepoxide is equal to 10mg Diazepam. I disagree, I'd say about 40mg is equal to 10mg Diazepam. Librium is a very weak benzodiazepine. When I last used Librium I took 250mg and felt mildly sedated.