What dose of diazepm mixed with alcohol would kill a person?

Mixing diazepam (a sedative) with alcohol can be potentially fatal, but there is no set dose that would guarantee death. The effects of a combination of diazepam and alcohol can vary greatly depending on a number of factors such as:

1. Individual factors: Age, weight, medical history, alcohol tolerance, and genetic variations can all affect how one responds to diazepam.

2. Dose: The amount of diazepam and alcohol involved in the mix is very important. Lower doses may cause significant disorientation, impairment of decision-making, memory issues, etc. However, a large, lethal dose can't be accurately and responsibly stated here because individual factors mentioned above play a very big role.

3. Interaction with other medications: When diazepam is combined with other medications or substances, including other sedatives and drugs affecting the central nervous system, the risk of fatal interactions increases dramatically.

It's essential to never intentionally mix these substances in significant amounts. Consult with healthcare professionals whenever in doubt. Additionally, always seek emergency medical help in case of severe dizziness, drowsiness, vomiting, confusion, and difficulty breathing when it comes to any drug.