Alprazolam (Xanax) is likely going to be the most potent short-acting Benzodiazepine that you will be prescribed. Temazepam (Restoril) was once considered to be THE Benzodiazepine for sleep, but even that is rarely prescribed in our current climate. Prior to Temazepam being mostly discontinued, there was a drug called Triazolam (Halcion) but it is almost never prescribed. Both of the former are typically only prescribed these days for severe, severe cases of insomnia and even then they can be hard to get.