Slimming pills like Reductil and Xenical can and do work and many people have successful results.
These medications should only be prescribed by your GP, as they do have side effects, some severe and most GPs will not prescribe them unles your BMI is 30 or above.
Reductil works by suppressing the appetite and although you will feel hungry when you need food, after eating you will feel satisfied for longer and not crave food.
Xenical works by removing fats in food from the body, but a strict, low fat diet must be adhered to, if not then the main side effect is that excesses of fat will be flushed from the bowels, when least expected.