This is my experience with Reductil Sleep
I lost alot of weight using reductil. Firstly, I had to take it anywhere upto around 11am. If I took it after then, I couldnt sleep and it didn't stop my appetite at lunch time. After being on it for a couple of weeks, all this settled down and I really lost my appetite. Also, if it keeps you awake, I didn't feel tired as a consequence. You can trick reductil though, and overeat, so it really needs to go with a lower calorie plus exercise regime. Its an antidepressant.
Most doctors will tell you its an antidepressant. Because I wanted to lose weight without reductil, I felt by then (after my first 10 kilos) that I could do it on my own. It was hard to come off and I was very teary and felt 'hormonal' for about a week. It also made me feel like my body was on 'speed' and that's another reason I stopped it.
All up, I think it was damn fantastic for giving me a good start at losing weight, and I implemented what I learnt to continue losing. I guess you have to weigh up what suits you... the positives of good weight loss but negatives of a 'speedy' and 'hormonal' feeling. I loved the results, but I've been there, done that and ticked it off and now I'd rather do it without the use of a drug.