I am addicted to Diazepam. I have been taking for years (along with Lorazipam at one point) I ang gradually trying to wean off them and have been trying to do so for 18 months. The max I used to take was 40mg per day, I am now down to 15mg each day. I think the longer you take them the less effect they have on you and you need more and more to get the same effect. My psychiatrist once said that I took enough to knock an elephant out!!