I've had chronic insomnia since age 8. My doctor has had me on tamazepam for several years, and when my resistance to them starts to build up, he switches me to Ambien for a month. Ambien raises my liver enzymes I'm currently on tamazepam, but I need 2 capsules (60) mg. So it's time to switch again. I've researched lorazepam and found that like tamazepam, it does not require hepatic oxidation. I know they come in O.5, 1mg and 2mg doses. My concern is that since I now have to take 60 mg of tamazepam just to get maybe 5 hours sleep, will 2mg of lorazepam be enough. Any info very much appreciated PS: I'm now 59 years old