No - they don't work.
If they did the NHS would prescribe them to combat obesity.
The main ingredient is methyl cellulose - wallpaper paste. It is also used in KY Jelly, shampoos, toothpaste, laxatives. I
http://en.wikipedia.org/wiki/Methylcellulose
It also contains hypromellose, which absorbs liquids - acts like a sponge in your stomach, making you feel full. The dandelion extract is included to counteract the effects of this.
Bladderwrack is seaweed, supposed to increase the metabolic rate although this has never been proved.
L-Carnitine, another ingredient, is banned in some countries such as Canada, but there is no real health risk.
�25 a month for wallpaper paste is a bit pricey, don't you think?
It is very similar in practice to the bran tablets taken before meals to give the impression of fullness.
But you know very well that no tablet you can buy will help you lose weight safely in the long term. Only your bank balance will be lighter.