My husband is over 60, very healthy, but has had sleep disorder most of his life. Last night he took 1mg. of Lorazepam and slept like a baby, (which meant I also got a good sleep!). I have 2 questions: #1. He also takes Cialis about once a week, are there contra-indications to using these two meds? #2. How often could he use the Lorazepam without developing an addiction to it?