i'm taking xenical and duromine. these are prescribed by my doctor but you can buy xenical over the counter. i have been on them for 2.5 months and have lost 10kgs. I have changed the way i eat and i exercise about 2-3 times a week. the pro's are that i have lost 10kgs, and the xenical has trained me on what is good to eat and what is not, the duromine has allowed my stomach to shrink so im full quicker and i want to exercise more. the cons are that i occasionally get stomach cramps, the xenical stops you from absorbing fat it 'passes' through you so if you eat badly you really regret it, um... never pass wind unless your on a toilet or you run the risk of oiling yourself, the duromine can make you itchy and loose sleep(haven't had this). and it can make you hyper. overall it depends on your body but it has worked really well and i would recommend trying it if you can.