I was suffering for over weight since i was young, after my doctor introduced me duromine, then only i see hope in my life, duromine really really help me a lot, i am so thankful to it, i only hv a little bit side effect that is only my mouth very dry but i drink lots of water also, so its not a problem for me, how long can i continue? i am so afraid that my doc don't supply to me anymore then i hope will disappear again. Normally Does it have control period for it, for example only 3 months a year or 6 month a year or so on? Will it cause cancer if its take too much?