The combining of benzos and alcohol is more common than you might imagine. Each of these substances can be dangerous on its own. However, they are even more hazardous when taking them together. People who have an alcohol and benzo addiction are at greater risk of dying from respiratory arrest than someone who uses only one or the other. The main reason for this is because both these substances depress the central nervous system and in combination they amplify each others effects. This makes accidental overdose far more likely because the results can be unpredictable.