what is the best tried and true fat loss supplement?

this question is for serious fitness competitiors and allied occupations. whats the best fat loss supplement you have tried that works to cut down the last few pounds and get show ready cut?
and i excersice already 6 days a week. run 30 min a day and weight train. thats why i want only fitness pros to answer this question.

Just go excersize

Technorati Tags: Allied Occupations, fat loss, Serious Fitness, Weight Train