Ladies ladies ladies, you have to remember the whole point of being prescribed duromine is to "kick start" your weight loss. Regardless duromine will help you lose weight, its like speed, and like some have commented you'll clean the whole house or work really hard but you need to take full advantage of the energy and work out because once you're off duromine you will put all the weight back on.
I talk from experience and there is no point going through the side effects if you're not going to change your lifestyle. Your doctor won't prescribe it for you forever so you need to make a change.
I've also found going for a big gym workout, walk or run will help you sleep at night because you're exhausting your body. Also the earlier you take it the better!
You'll also lose more weight if you work out aswell. Trust me make the most of it, if you search the results most people who do nothing will always end up putting on more weight then what they started with because they don't make the most of it and still have their old habbits.
Also the reason you may not get the energy boost on 15mg is because its the lowest dose, 30mg will give you the energy and 40mg will send you crazy!
Feel free to ask me any questions, I love helping