Hi! I am new to this forum. I have a few questions. I would like to know what is the highest dosage of valium you can take to help you sleep? I have a severe case of insomnia. My doctor gave me 10mg of valium and I also have Xanex. I need to know what is the highest dosage of valium I can take for sleep or if I can take valium and xanex together. Please respond and let me know!