Diet..Diet..Diet!!! fat burners will only make you fatter w/o proper diet.
Avoid HFCS (high fructose corn syrup) in sodas, fruit juice..ect. A trick i learned..eat free range lean meats and dairy...read lables..stuff in a can(vegetables/fruit) are loaded with hidden sugars. Eat 5 small meals to keep metabolism churning. Then try a ECA stack. Primatene/bronkaid..vivarin or no doze..baby asprin. The days of the old xenadrine are long gone and there are many fakes out there so be careful...good luck