F*ck of fat is not an appetite suppressant but a fatburner and should be used in combination with a well-structured diet. It is really not a good idea looking for an appetite suppressant if thats what you meant. The people I know who have used appetite suppressants like thinz have lost a bit but then put on twice as much when they stopped as the body gets starved of nutrients and then clings to anything it can get. They also complained of lethargy and general fatigue when they were on the shit.
I would recommend that you make sure that you have your diet in place first before trying anything. Post what you eat on a daily basis so we can have a look. Fat burners will possibly be effective in combination with a good diet but will be useless to rely on them solely for weight loss.
"Do or do not, there is no try" - Yoda
"It's simple, if it jiggles, it's fat."- Arnold Schwarzenegger