I've taken both of these medications before. If we look at diazepam vs alprazolam dose wise, about 20mg of diazepam equals 2mg of alprazolam. So alprazolam is way stronger. But they're both benzodiazepine group of drugs. So they both make me feel like a zombie and they're both addictive. People need to be very careful when taking either. Doctors are careful and will not prescribe these unless necessary. But I think they're best avoided if an alternative medication/treatment can be used.