This post may be a little late, but to whoever else views it, Benzodiazepines and amphetamines are commonly prescribed together by psychiatrists. I happen to take an amphetamine and clonazepam together currently and have for years. Your dose of 30 Mg Adderall XR is higher, but common. If 0.5 Mg of clonazepam works and is around where your tolerance is, you would do best to stay around there. Having a effective, low dose, clonazepam tolerance, is a nice thing that many people here would love to have. Taking clonazepam with your amphetamine dosage, would smooth out the rough edges of the 30 Mg Adderall XR. If you are a little too excited from the Adderall, 0.5 to 1 Mg of clonazepam should smooth things out a bit and make the comedown smoother. As everyone stated above, there is just no real good reason to abuse benzodiazepines. You run the risk of blacking out and raising your tolerance for no reason. Enjoy responsibly.