Ok, start by keeping a diet log. Track all of the food you eat for the next week, total the calories from every day and divide by seven, this is your average daily calorie intake. Drop that number by 5% and start doing cardio and resistance training. Don't take thermogenics until your body starts "fighting back" by dropping your basal metabolic rate, usually after two weeks. You'll also want to eat a diet similar to a 40%-40%-20% ratio of Protein, carbs, and fat. You may try a ketogenic diet if tolerable but be careful of rebound fat gain once you come off it. Try to stick with whole grains and vegetables for your carbs and lean meat for proteins, you may want a protein powder to help meet your protein requirements and flax oil for your essential fatty acids. In the end, diet and exercise are the keys and magic potions just give you a little "push" in the right direction.