Jools - yep. I'm taking reductil. Prescribed by my GP and definitly worth it if you can get it. It helps with feelings of satisfaction and hunger. I don't feel hungry as often as I used to. I rarely get cravings any more and I find less food makes me feel more satisified.
of course, I can still overeat when I'm p***ed off, but if I have the motivation to be good it definitely helps.
As for the over the counter ones, they're all nonsense.