... years. I am on 7 medications at this time for various things. I have been taking prazosin HCL 2 mg for about 4 weeks. I take 4 meds at bedtime and I still have really bad nightmares and night terrors. I still only sleep for an hour or two at a time and will still go back to the same nightmare. Will an increase in dosage help or not the right one for me. Anna