Hello,I have severe insomnia, and have not slept in two days. I am very sick. Because I rapidly become tolerant to sleep medications I am cycling (with medical supervision) through several sleep medications and other medications that have helped people to sleep. Tonight I took 2mg of Prazosin but it is not helping me sleep. Can I take benedryl? I do not respond to any less than 75 mg. I do not want to have a paradoxical reaction. It should be noted that I have hypersomnia and need 11 hours sleep in order to function. This severe, refractory insomnia is making sleep next to impossible. I can't stress how exhausted and ill I feel.